def voice(old_voiced, nxt_chord):
if old_voiced is None:
return chords.from_shorthand(nxt_chord)
old = [notes.note_to_int(n) for n in old_voiced]
new = {notes.note_to_int(n) for n in chords.from_shorthand(nxt_chord)}
res = []
for note in old:
if new:
closest = min(new, key=lambda n: abs(note - n))
res.append(closest)
new.remove(closest)
else:
if len(old) == 4:
res.append(res[0])
for n in new:
best_index = 0
min_dist = 12
for i in range(0, len(old)):
dist = abs(old[i] - n)
if dist < min_dist:
min_dist = dist
best_index = i
res.insert(i, n)
return [notes.int_to_note(n) for n in res]
def test_determine(self):
map(lambda x: self.assertEqual(True,
chords.determine(chords.from_shorthand('C' + x)) != [],
"'C%s' should return a value" % x), chords.chord_shorthand.keys())
map(lambda x: self.assertEqual('C' + chords.chord_shorthand_meaning[x],
chords.determine(chords.from_shorthand('C' + x))[0],
"The proper naming of '%s' is not '%s',expecting '%s'" % ('C' + x,
chords.determine(chords.from_shorthand('C' + x)), 'C'
+ chords.chord_shorthand_meaning[x])), [x for x in
chords.chord_shorthand.keys() if x != '5'])
self.chordsTest([[['A13'], [
'A',
'C#',
'E',
'G',
'B',
'D',
'F#',
]], [['Am13'], [
'A',
'C',
'E',
'G',
'B',
'D',
'F#',
]], [['AM13'], [
'A',
'C#',
'E',
'G#',
'B',
'D',
'F#',
]]], lambda x: chords.determine(x, True), 'chord name')
def voice(old_voiced, nxt_chord):
if old_voiced is None:
return chords.from_shorthand(nxt_chord)
old = [notes.note_to_int(n) for n in old_voiced]
new = {notes.note_to_int(n) for n in chords.from_shorthand(nxt_chord)}
res = []
for note in old:
if new:
closest = min(new, key=lambda n: abs(note - n))
res.append(closest)
new.remove(closest)
else:
if len(old) == 4:
res.append(res[0])
for n in new:
best_index = 0
min_dist = 12
for i in range(0, len(old)):
dist = abs(old[i] - n)
if dist < min_dist:
min_dist = dist
best_index = i
res.insert(i, n)
return [notes.int_to_note(n) for n in res]
def test_determine(self):
for x in chords.chord_shorthand:
self.assertEqual(
True,
chords.determine(chords.from_shorthand("C" + x)) != [],
"'C%s' should return a value" % x,
)
for x in (x for x in chords.chord_shorthand if x != "5"):
self.assertEqual(
"C" + chords.chord_shorthand_meaning[x],
chords.determine(chords.from_shorthand("C" + x))[0],
"The proper naming of '%s' is not '%s',expecting '%s'"
% (
"C" + x,
chords.determine(chords.from_shorthand("C" + x)),
"C" + chords.chord_shorthand_meaning[x],
),
)
self.chordsTest(
[
[["A13"], ["A", "C#", "E", "G", "B", "D", "F#",]],
[["Am13"], ["A", "C", "E", "G", "B", "D", "F#",]],
[["AM13"], ["A", "C#", "E", "G#", "B", "D", "F#",]],
],
lambda x: chords.determine(x, True),
"chord name",
)
def sheets():
if request.method == 'GET':
sheets = Sheet.query.all()
return jsonify({'sheets': [s.to_dict() for s in sheets]})
elif request.method == 'POST':
data = request.json
sheet = Sheet(name=data['name'])
chords = []
for c in data['chords']:
shorthand_notation = c['name']
chord = Chord(name=shorthand_notation)
chord.notes = ' '.join(ch.from_shorthand(shorthand_notation))
print(chord.notes)
inversions = [
' '.join(ch.first_inversion(chord.notes.split(' '))),
' '.join(ch.second_inversion(chord.notes.split(' '))),
' '.join(ch.third_inversion(chord.notes.split(' ')))
]
chord.inversions = [
Inversion(name=str(i), notes=notes)
for i, notes in enumerate(inversions)
]
chords.append(chord)
sheet.chords = chords
db.session.add(sheet)
db.session.commit()
return jsonify(sheet.to_dict()), 201
def root_only_voice(chord:str):
'''
Expects a shorthand string like 'CM7' and will return with the root only (as semitone integer)
'''
note_names = chords.from_shorthand(chord) # shorthand -> unpitched note strings ['C', 'E', 'G', 'B']
voiced_semitones = rebuild_chord_upwards([int(Note(note_names[0], octave=3))])
return voiced_semitones # ensure we voice from root upwards (in case e.g. everything defaulted to same octave)
def addquickchordinselection(self, text, midi):
if text:
colonindex = text.find(";")
if colonindex < 0:
chordtext = text
arptext = ""
else:
chordtext = text[0:colonindex]
arptext = text[colonindex + 1:]
try:
chordlist = CHORDS.from_shorthand(chordtext)
except:
self.setalert("onbekende chord.")
chordlist = []
if chordlist:
for i in range(len(chordlist)):
chordlist[i] = NOTES.note_to_int(chordlist[i])
chordlist = list(set(chordlist))
chordlist.sort()
tickmin, tickmax, midimin, midimax = self.getselectionregion()
self.addchordinregion(chordlist, [tickmin, tickmax],
[midimin, midimax], arptext)
self.setcurrentticksandload(self.currentabsoluteticks)
#self.anchor = 0
self.setstate(state=self.NAVIGATIONstate)
return {}
def analyze_7th_chord(chord):
"""
:param chord:
:return: chord_notes, chord_type_full, chord_modes
Example:
>>> chord_notes, chord_type_full, results = analyze_chord("G7")
>>> for chord_degree, key, harmonic_func_full in results:
... print("{} (comprising {}) is a {} chord ({}) of the key of {}".format(chord_type_full,', '.join(chord_notes),
... chord_degree, harmonic_func_full,
... key))
G dominant seventh (comprising G, B, D, F) is a V chord (dominant seventh) of the key of C
"""
chord_notes = chords.from_shorthand(chord)
chord_type_full = chords.determine_seventh(chord_notes)[0]
chord_type_short = chords.determine_seventh(chord_notes, shorthand=True)[0]
type_key = 'M7' if chord_type_short[-2:] == 'M7' else (
'm7' if chord_type_short[-2:] == 'm7' else
('m7b5' if chord_type_short[-2:] == 'm7b5' else '7'))
chord_modes = []
for key in CIRCLE_OF_5THS:
harmonic_func = determine(chord_notes, key, shorthand=True)[0]
harmonic_func_full = determine(chord_notes, key, shorthand=False)[0]
chord_degree = harmonic_func[:-1]
if chord_degree in MODE_CHORD_TYPE:
func_chord_type = MODE_CHORD_TYPE[chord_degree]
if func_chord_type == type_key:
chord_modes.append((chord_degree, key, harmonic_func_full))
return chord_notes, chord_type_full, chord_modes
def analyze_7th_chord(chord):
"""
:param chord:
:return: chord_notes, chord_type_full, chord_modes
Example:
>>> chord_notes, chord_type_full, results = analyze_chord("G7")
>>> for chord_degree, key, harmonic_func_full in results:
... print("{} (comprising {}) is a {} chord ({}) of the key of {}".format(chord_type_full,', '.join(chord_notes),
... chord_degree, harmonic_func_full,
... key))
G dominant seventh (comprising G, B, D, F) is a V chord (dominant seventh) of the key of C
"""
chord_notes = chords.from_shorthand(chord)
chord_type_full = chords.determine_seventh(chord_notes)[0]
chord_type_short = chords.determine_seventh(chord_notes, shorthand=True)[0]
type_key = (
"M7"
if chord_type_short[-2:] == "M7"
else ("m7" if chord_type_short[-2:] == "m7" else ("m7b5" if chord_type_short[-2:] == "m7b5" else "7"))
)
chord_modes = []
for key in CIRCLE_OF_5THS:
harmonic_func = determine(chord_notes, key, shorthand=True)[0]
harmonic_func_full = determine(chord_notes, key, shorthand=False)[0]
chord_degree = harmonic_func[:-1]
if chord_degree in MODE_CHORD_TYPE:
func_chord_type = MODE_CHORD_TYPE[chord_degree]
if func_chord_type == type_key:
chord_modes.append((chord_degree, key, harmonic_func_full))
return chord_notes, chord_type_full, chord_modes
def normalizeChords(chordBlocks):
allChords = []
allChordNotes = []
allStream = music21.stream.Stream()
for chordBlock in chordBlocks:
blockChords = []
blockChordNotes = []
blockStream = music21.stream.Stream()
for line in chordBlock.lines:
if line:
for index, chord in line:
chords.append(chord)
try:
if chord in ['A', 'B', 'C', 'D', 'E', 'F', 'G']:
notes = [chord]
else:
notes = [note.replace('b', '-') for note in mingus_chords.from_shorthand(chord)]
allChordNotes.append(notes)
blockChordNotes.append(notes)
except Exception as e:
_chordErrors.add(str(e))
if len(blockChords) > 0:
[blockStream.insert(music21.chord.Chord([note.replace('b', '-') for note in notes])) for notes in blockChordNotes]
keys = [blockStream.analyze(type).tonicPitchNameWithCase for type in ['AardenEssen', 'Simple', 'BellmanBudge', 'KrumhanslSchmuckler', 'KrumhanslKessler', 'TemperleyKostkaPayne']]
key = max(set(keys), key=keys.count)
consensus = keys.count(key) / float(len(keys))
chordBlock['metaData']['key'] = key
chordBlock['metaData']['keyConsensus'] = consensus
def chord(sheetId, chordId):
if request.method == 'GET':
chord = db.session.query(Chord).join(Sheet).filter(
Sheet.id == sheetId).filter(Chord.id == chordId).first()
return jsonify(chord.to_dict())
elif request.method == 'PUT':
data = request.json
chord = db.session.query(Chord).join(Sheet).filter(
Sheet.id == sheetId).filter(Chord.id == chordId).first()
shorthand_notation = data['name']
chord.name = shorthand_notation
chord.notes = ' '.join(ch.from_shorthand(shorthand_notation))
inversions = [
' '.join(ch.first_inversion(chord.notes.split(' '))),
' '.join(ch.second_inversion(chord.notes.split(' '))),
' '.join(ch.third_inversion(chord.notes.split(' ')))
]
chord.inversions = [
Inversion(name=str(i), notes=notes)
for i, notes in enumerate(inversions)
]
chord.updated_at = dt.utcnow()
db.session.commit()
return jsonify(chord.to_dict()), 201
elif request.method == 'DELETE':
db.session.query(Chord).filter(Chord.sheet_id == sheetId).filter(
Chord.id == chordId).delete()
db.session.query(Inversion).filter(
Inversion.chord_id == chordId).delete()
db.session.commit()
return jsonify(
{"msg":
f"Chord {chordId} has been deleted from Sheet {sheetId}."}), 201
def default_voice(chord:str):
'''
Expects a shorthand string like 'CM7' and will return with the natural voicing of ascending extensions as semitones (integers)
'''
note_names = chords.from_shorthand(chord) # shorthand -> unpitched note strings ['C', 'E', 'G', 'B']
voiced_semitones = rebuild_chord_upwards([int(Note(note)) for note in note_names])
return voiced_semitones # ensure we voice from root upwards (in case e.g. everything defaulted to same octave)
def longhand_trans(soup):
# iterate over line in section in dup_free_c_list, convert to longhand & append to longhand_chords list
longhand_chords = []
for section in clean_duplicates(soup):
for line in section:
for chord in line:
longhand_chords.append(chords.from_shorthand(chord))
return longhand_chords
def test_determine(self):
map(lambda x: self.assertEqual(True, \
chords.determine(chords.from_shorthand("C" + x)) != [],\
"'C%s' should return a value" % x), \
chords.chord_shorthand.keys())
map(lambda x: self.assertEqual("C" + \
chords.chord_shorthand_meaning[x],\
chords.determine(chords.from_shorthand("C" + x))[0], \
"The proper naming of '%s' is not '%s',"\
"expecting '%s'" % ("C" + x, \
chords.determine(chords.from_shorthand("C" + x)), \
"C" + chords.chord_shorthand_meaning[x])),\
[x for x in chords.chord_shorthand.keys() if \
x != '5'])
self.chordsTest([ [['A13'], ['A', 'C#', 'E', 'G', 'B', 'D', 'F#']],\
[['Am13'], ['A', 'C', 'E', 'G', 'B', 'D', 'F#']],\
[['AM13'], ['A', 'C#', 'E', 'G#', 'B', 'D', 'F#']]],\
lambda x: chords.determine(x, True), "chord name")
def test_determine(self):
list(
map(
lambda x: self.assertEqual(
True,
chords.determine(chords.from_shorthand('C' + x)) != [],
"'C%s' should return a value" % x),
list(chords.chord_shorthand.keys())))
list(
map(
lambda x: self.assertEqual(
'C' + chords.chord_shorthand_meaning[x],
chords.determine(chords.from_shorthand('C' + x))[0],
"The proper naming of '%s' is not '%s',expecting '%s'" %
('C' + x, chords.determine(chords.from_shorthand('C' + x)),
'C' + chords.chord_shorthand_meaning[x])),
[x for x in list(chords.chord_shorthand.keys()) if x != '5']))
self.chordsTest([[['A13'], [
'A',
'C#',
'E',
'G',
'B',
'D',
'F#',
]], [['Am13'], [
'A',
'C',
'E',
'G',
'B',
'D',
'F#',
]], [['AM13'], [
'A',
'C#',
'E',
'G#',
'B',
'D',
'F#',
]]], lambda x: chords.determine(x, True), 'chord name')
def _naive(self):
naivebassline= []
for chord in self.bassline:
chord, _ , time = chord.split(' ')
if chord in ['R','r']: naivebassline.append(['R']*int(time)); continue
notes = chords.from_shorthand(chord)
accessory_notes = notes[1:]
shuffle(accessory_notes)
naivebassline.append([notes[0]]+accessory_notes[:(int(time)-1)])
self.bassline = flatten(naivebassline)
self.bassline = map(lambda x:_note_sub[x],self.bassline)
def from_chord_shorthand(self, shorthand):
"""Empties the container and adds the notes in the shorthand. \
See mingus.core.chords.from_shorthand for an up to date list of recognized format.
{{{
>>> nc = NoteContainer()
>>> nc.from_chord_shorthand("Am")
['A-4', 'C-5', 'E-5']
}}}"""
self.empty()
self.add_notes(chords.from_shorthand(shorthand))
return self
def from_chord_shorthand(self, shorthand):
"""Empty the container and add the notes in the shorthand.
See mingus.core.chords.from_shorthand for an up to date list of
recognized format.
Example:
>>> NoteContainer().from_chord_shorthand('Am')
['A-4', 'C-5', 'E-5']
"""
self.empty()
self.add_notes(chords.from_shorthand(shorthand))
return self
def from_chord_shorthand(self, shorthand):
"""Empty the container and add the notes in the shorthand.
See mingus.core.chords.from_shorthand for an up to date list of
recognized format.
Example:
>>> NoteContainer().from_chord_shorthand('Am')
['A-4', 'C-5', 'E-5']
"""
self.empty()
self.add_notes(chords.from_shorthand(shorthand))
return self
def __dump_chord(self, chord):
if self.__notes_depot:
logging.info("Notes in melody are: %s" % (", ".join(self.__notes_depot)))
self.__notes_depot = []
if chord:
try:
chord_tones = chords.from_shorthand(chord)
logging.info("\nChord is %s" % chord)
logging.info("Chord tones are: %s" % (", ".join(chord_tones)))
except mt_exceptions.FormatError:
logging.error("Error parsing chord symbol %s" % chord)
def from_chord_shorthand(self, shorthand):
"""Empties the container and adds the notes in the shorthand. See \
mingus.core.chords.from_shorthand for an up to date list of recognized \
format.
{{{
>>> nc = NoteContainer()
>>> nc.from_chord_shorthand(\"Am\")
['A-4', 'C-5', 'E-5']
}}}"""
self.empty()
self.add_notes(chords.from_shorthand(shorthand))
return self
def get_notes_from_chord(self, chord = 'Cmaj7', octaves_above = 0, octaves_below = 0):
notes = []
for n in chords.from_shorthand(chord):
note = Note(n)
notes.append(note)
for i in xrange(octaves_above):
note = Note(n)
note.octave += i + 1
notes.append(note)
for i in xrange(octaves_below):
note = Note(n)
note.octave -= i + 1
notes.append(note)
return sorted(notes)
def progression_to_chords(progression, prog_type='shorthand'):
'''
progression is list of symbols -> chords_ is a list of unvoiced str e.g. as numerals ['I7', 'V7', 'II']
and output is unvoiced chord strings -> [['C', 'E', 'G', 'Bb'], ...]
NOTE: for numerals input, lower-case should not be used to imply minor (specify using '-', 'm', 'min')
'''
progression = parse_progression(
progression
) # to prevent mingus' diatonic parsing doing something like I7->Cmaj7
if prog_type == 'shorthand': # e.g. Am7
chords_ = [chords.from_shorthand(chord) for chord in progression]
elif prog_type == 'numerals': # e.g. IIm7
chords_ = [progressions.to_chords(chord)[0] for chord in progression]
return chords_ #a list of lists [['C', 'E', 'G', 'B'],...]
def get_notes_from_chord(self,
chord='Cmaj7',
octaves_above=0,
octaves_below=0):
notes = []
for n in chords.from_shorthand(chord):
note = Note(n)
notes.append(note)
for i in xrange(octaves_above):
note = Note(n)
note.octave += i + 1
notes.append(note)
for i in xrange(octaves_below):
note = Note(n)
note.octave -= i + 1
notes.append(note)
return sorted(notes)
def play_smart_solo_over_chords(chord_list): fluidsynth.set_instrument(13, 45) fluidsynth.set_instrument(10, 108) fluidsynth.main_volume(13, 75) fluidsynth.main_volume(10, 100) solo = Track() bars = generate_solo(chord_list) for i in range(len(bars)): chord = NoteContainer(chords.from_shorthand(chord_list[i])) bar = bars[i] fluidsynth.play_NoteContainer(chord, 13) fluidsynth.play_Bar(bar, 10) fluidsynth.stop_NoteContainer(chord, 13) solo.add_bar(bar) return solo
def bassline(chord, beat_probas):
chord_tones = chords.from_shorthand(chord)
octave = 2
b = Bar()
for (bass, els, octa) in beat_probas:
p = random.random()
if p < bass:
b.place_notes(Note(chord_tones[0], octave), 8)
elif p < bass + els:
b.place_notes(Note(random.choice(chord_tones[1:]), octave), 8)
elif p < bass + els + octa:
b.place_notes(Note(chord_tones[0], octave + 1), 8)
else:
b.place_rest(8)
return b
def get_notes_from_chord(response, fb_id):
"""Determine notes in a chord given the chord's name."""
# ? AND/OR: Extract the notes user sent. Input to library function and return identified chord as response back to user
# ? When user requests 7th chord, check if trait "7th" is present
# ? When user requests inversions, check if trait "inversion" and get it's value, then use inversion function on chord
try:
# Extract Key-Quality (e.g. F major)
kq_entity = response['entities']["Key_Quality:Key_Quality"][0]
except KeyError as e:
text = "Sorry! I couldn't identify the chord name :/"
return text # Exit early
# Handle the various valid forms of key quality (e.g. f maj)
key_quality = kq_entity['value']
key_quality = key_quality.lower()
key_quality = key_quality.capitalize()
try:
# Extract the key of the chord
note = kq_entity['entities'][0]['value']
except (KeyError, IndexError) as e:
# Could arise when user joins key with quality (e.g. Fmajor)
text = "Sorry! I'm not sure what the key is :/"
return text # Exit early
# Format user input to requirement of from_shorthand() method
if 'maj' in key_quality or 'major' in key_quality:
key_quality = note + 'maj'
elif 'min' in key_quality or 'minor' in key_quality:
key_quality = note + 'min'
else:
key_quality = note
try:
# Determine the notes in requested chord
notes_list = chords.from_shorthand(key_quality)
notes_str = ', '.join(notes_list)
text = f"The notes in a {key_quality} chord are {notes_str}."
except Exception as e:
print("EXCEPTION:", e)
text = f"Sorry! I can't identify a {kq_entity['body']} chord :/"
return text
def bassline(chord, beat_probas):
chord_tones = chords.from_shorthand(chord)
octave = 2
b = Bar()
for (bass, els, octa) in beat_probas:
p = random.random()
if p < bass:
b.place_notes(Note(chord_tones[0], octave), 8)
elif p < bass + els:
b.place_notes(Note(random.choice(chord_tones[1:]), octave), 8)
elif p < bass + els + octa:
b.place_notes(Note(chord_tones[0], octave + 1), 8)
else:
b.place_rest(8)
return b
def sheet(sheetId):
if request.method == 'GET':
sheet = Sheet.query.get(sheetId)
return jsonify({'sheet': sheet.to_dict()})
elif request.method == 'PUT':
data = request.json
shorthand_notation = data['name']
chord = Chord(name=shorthand_notation, sheet_id=sheetId)
chord.name = shorthand_notation
chord.notes = ' '.join(ch.from_shorthand(shorthand_notation))
inversions = [
' '.join(ch.first_inversion(chord.notes.split(' '))),
' '.join(ch.second_inversion(chord.notes.split(' '))),
' '.join(ch.third_inversion(chord.notes.split(' ')))
]
chord.inversions = [
Inversion(name=str(i), notes=notes)
for i, notes in enumerate(inversions)
]
chord.updated_at = dt.utcnow()
db.session.add(chord)
db.session.commit()
return jsonify(chord.to_dict()), 201
elif request.method == 'DELETE':
chordIds = [
chord.id for chord in db.session.query(Chord).join(Sheet).filter(
Sheet.id == sheetId).all()
]
db.session.query(Sheet).filter(Sheet.id == sheetId).delete()
for id in chordIds:
db.session.query(Chord).filter(Chord.sheet_id == sheetId).filter(
Chord.id == id).delete()
db.session.query(Inversion).filter(
Inversion.chord_id == id).delete()
db.session.commit()
return jsonify({"msg": f"Sheet {sheetId} has been deleted."}), 201
def test_from_shorthand(self):
answers = { # Triads Augmented Sevenths Sixths 6/9 Slash chords
# Suspended chords 9 11 13 Altered chords Special Poly
# chords
'Amin': ['A', 'C', 'E'],
'Am': ['A', 'C', 'E'],
'A-': ['A', 'C', 'E'],
'Amaj': ['A', 'C#', 'E'],
'AM': ['A', 'C#', 'E'],
'A': ['A', 'C#', 'E'],
'Adim': ['A', 'C', 'Eb'],
'Aaug': ['A', 'C#', 'E#'],
'A+': ['A', 'C#', 'E#'],
'A7#5': ['A', 'C#', 'E#', 'G'],
'Amaj7+5': ['A', 'C#', 'E#', 'G'],
'Amaj7+': ['A', 'C#', 'E#', 'G#'],
'Amin7+': ['A', 'C#', 'E#', 'G'],
'Amin7': ['A', 'C', 'E', 'G'],
'Am7': ['A', 'C', 'E', 'G'],
'Ami7': ['A', 'C', 'E', 'G'],
'A-7': ['A', 'C', 'E', 'G'],
'Amaj7': ['A', 'C#', 'E', 'G#'],
'AM7': ['A', 'C#', 'E', 'G#'],
'Ama7': ['A', 'C#', 'E', 'G#'],
'A7': ['A', 'C#', 'E', 'G'],
'Amin7b5': ['A', 'C', 'Eb', 'G'],
'Am7b5': ['A', 'C', 'Eb', 'G'],
'Adim7': ['A', 'C', 'Eb', 'Gb'],
'Am/M7': ['A', 'C', 'E', 'G#'],
'Am/ma7': ['A', 'C', 'E', 'G#'],
'AmM7': ['A', 'C', 'E', 'G#'],
'Am/maj7': ['A', 'C', 'E', 'G#'],
'Amin6': ['A', 'C', 'E', 'F#'],
'Am6': ['A', 'C', 'E', 'F#'],
'Amaj6': ['A', 'C#', 'E', 'F#'],
'A6': ['A', 'C#', 'E', 'F#'],
'A6/9': ['A', 'C#', 'E', 'F#', 'B'],
'A69': ['A', 'C#', 'E', 'F#', 'B'],
'A/G': ['G', 'A', 'C#', 'E'],
'Amin/G': ['G', 'A', 'C', 'E'],
'Am/M7/G': ['G', 'A', 'C', 'E', 'G#'],
'Asus2': ['A', 'B', 'E'],
'Asus4': ['A', 'D', 'E'],
'Asus47': ['A', 'D', 'E', 'G'],
'A11': ['A', 'E', 'G', 'D'],
'Asus': ['A', 'D', 'E'],
'Asus4b9': ['A', 'D', 'E', 'Bb'],
'Asusb9': ['A', 'D', 'E', 'Bb'],
'Amaj9': ['A', 'C#', 'E', 'G#', 'B'],
'A9': ['A', 'C#', 'E', 'G', 'B'],
'Amin9': ['A', 'C', 'E', 'G', 'B'],
'Am9': ['A', 'C', 'E', 'G', 'B'],
'A7#11': ['A', 'C#', 'E', 'G', 'D#'],
'Am11': ['A', 'C', 'E', 'G', 'D'],
'Amin11': ['A', 'C', 'E', 'G', 'D'],
'Amaj13': [
'A',
'C#',
'E',
'G#',
'B',
'F#',
],
'A13': [
'A',
'C#',
'E',
'G',
'B',
'F#',
],
'Am13': [
'A',
'C',
'E',
'G',
'B',
'F#',
],
'A7b9': ['A', 'C#', 'E', 'G', 'Bb'],
'A7#9': ['A', 'C#', 'E', 'G', 'B#'],
'A7b5': ['A', 'C#', 'Eb', 'G'],
'A6/7': ['A', 'C#', 'E', 'F#', 'G'],
'A67': ['A', 'C#', 'E', 'F#', 'G'],
'A5': ['A', 'E'],
'Ahendrix': ['A', 'C#', 'E', 'G', 'C'],
'N.C.': [],
'NC': [],
'Dm|G': ['G', 'B', 'D', 'F', 'A'],
'Dm7|G': [
'G',
'B',
'D',
'F',
'A',
'C',
],
'Am7|G7': [
'G',
'B',
'D',
'F',
'A',
'C',
'E',
'G',
],
}
map(lambda x: self.assertEqual(answers[x], chords.from_shorthand(x),
'The shorthand of %s is not %s, expecting %s' % (x,
chords.from_shorthand(x), answers[x])), answers.keys())
def test_from_shorthand(self):
answers = { # Triads Augmented Sevenths Sixths 6/9 Slash chords
# Suspended chords 9 11 13 Altered chords Special Poly
# chords
'Amin': ['A', 'C', 'E'],
'Am': ['A', 'C', 'E'],
'A-': ['A', 'C', 'E'],
'Amaj': ['A', 'C#', 'E'],
'AM': ['A', 'C#', 'E'],
'A': ['A', 'C#', 'E'],
'Adim': ['A', 'C', 'Eb'],
'Aaug': ['A', 'C#', 'E#'],
'A+': ['A', 'C#', 'E#'],
'A7#5': ['A', 'C#', 'E#', 'G'],
'Amaj7+5': ['A', 'C#', 'E#', 'G'],
'Amaj7+': ['A', 'C#', 'E#', 'G#'],
'Amin7+': ['A', 'C#', 'E#', 'G'],
'Amin7': ['A', 'C', 'E', 'G'],
'Am7': ['A', 'C', 'E', 'G'],
'Ami7': ['A', 'C', 'E', 'G'],
'A-7': ['A', 'C', 'E', 'G'],
'Amaj7': ['A', 'C#', 'E', 'G#'],
'AM7': ['A', 'C#', 'E', 'G#'],
'Ama7': ['A', 'C#', 'E', 'G#'],
'A7': ['A', 'C#', 'E', 'G'],
'Amin7b5': ['A', 'C', 'Eb', 'G'],
'Am7b5': ['A', 'C', 'Eb', 'G'],
'Adim7': ['A', 'C', 'Eb', 'Gb'],
'Am/M7': ['A', 'C', 'E', 'G#'],
'Am/ma7': ['A', 'C', 'E', 'G#'],
'AmM7': ['A', 'C', 'E', 'G#'],
'Am/maj7': ['A', 'C', 'E', 'G#'],
'Amin6': ['A', 'C', 'E', 'F#'],
'Am6': ['A', 'C', 'E', 'F#'],
'Amaj6': ['A', 'C#', 'E', 'F#'],
'A6': ['A', 'C#', 'E', 'F#'],
'A6/9': ['A', 'C#', 'E', 'F#', 'B'],
'A69': ['A', 'C#', 'E', 'F#', 'B'],
'A/G': ['G', 'A', 'C#', 'E'],
'Amin/G': ['G', 'A', 'C', 'E'],
'Am/M7/G': ['G', 'A', 'C', 'E', 'G#'],
'Asus2': ['A', 'B', 'E'],
'Asus4': ['A', 'D', 'E'],
'Asus47': ['A', 'D', 'E', 'G'],
'A11': ['A', 'E', 'G', 'D'],
'Asus': ['A', 'D', 'E'],
'Asus4b9': ['A', 'D', 'E', 'Bb'],
'Asusb9': ['A', 'D', 'E', 'Bb'],
'Amaj9': ['A', 'C#', 'E', 'G#', 'B'],
'A9': ['A', 'C#', 'E', 'G', 'B'],
'Amin9': ['A', 'C', 'E', 'G', 'B'],
'Am9': ['A', 'C', 'E', 'G', 'B'],
'A7#11': ['A', 'C#', 'E', 'G', 'D#'],
'Am11': ['A', 'C', 'E', 'G', 'D'],
'Amin11': ['A', 'C', 'E', 'G', 'D'],
'Amaj13': [
'A',
'C#',
'E',
'G#',
'B',
'F#',
],
'A13': [
'A',
'C#',
'E',
'G',
'B',
'F#',
],
'Am13': [
'A',
'C',
'E',
'G',
'B',
'F#',
],
'A7b9': ['A', 'C#', 'E', 'G', 'Bb'],
'A7#9': ['A', 'C#', 'E', 'G', 'B#'],
'A7b5': ['A', 'C#', 'Eb', 'G'],
'A6/7': ['A', 'C#', 'E', 'F#', 'G'],
'A67': ['A', 'C#', 'E', 'F#', 'G'],
'A5': ['A', 'E'],
'Ahendrix': ['A', 'C#', 'E', 'G', 'C'],
'N.C.': [],
'NC': [],
'Dm|G': ['G', 'B', 'D', 'F', 'A'],
'Dm7|G': [
'G',
'B',
'D',
'F',
'A',
'C',
],
'Am7|G7': [
'G',
'B',
'D',
'F',
'A',
'C',
'E',
'G',
],
}
list(
map(
lambda x: self.assertEqual(
answers[x], chords.from_shorthand(
x), 'The shorthand of %s is not %s, expecting %s' %
(x, chords.from_shorthand(x), answers[x])),
list(answers.keys())))
def main():
misty_numerals = 'IM7, v-7, I7, IVM7, iv-9, bVII7, IM7, vi-7, ii-7, V7, iii-7, VI7, ii-7, V7, \
IM7, v-7, I7, IVM7, iv-9, bVII7, IM7, vi-7, ii-7, V7, I6, bVII9, IM7, \
v-7, I7b9, IVM7, IVM7,\
bv-7, VII7, II7, iii-7, VI7b9, ii-7, V7, \
IM7, v-7, I7, IVM7, iv-9, bVII7, IM7, vi-7, ii-7, V7, I6, I6'
misty_durs = [
1, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 2, 2, 1, 2, 2, 2, 2, 2, 2,
2, 2, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 1, 2, 2, 2, 2, 1, 1,
1, 1
]
mistyChart = sidewinder.Chart(progression=misty_numerals, key='F')
mistyChart.set_durations(durations=misty_durs)
twofiveone = ['IIm7', 'V7', 'IM7']
two_five_ones = detect_numeral_pattern(
mistyChart.get_numeral_representation(),
pattern=twofiveone,
transposing='True',
original_key=mistyChart.key)
print(two_five_ones)
tfo_durs = [[
mistyChart.durations[tf['start_index']],
mistyChart.durations[tf['start_index'] + 1],
mistyChart.durations[tf['start_index'] + 2]
] for tf in two_five_ones['hits']]
# from random import choices
# # asc = [1,2,3,4,5,4,3,1]
# asc = [1,2,4,'b7','b9']
# p = choices(asc, weights=[1,2,2,2,1], k=32)
# print(p)
# melody = get_scale_patterns('chromatic', p=p, keys=['F'], pattern_as_chromatic=True)
# print(melody['F'][0])
# add a selection of melody to a selection of bars in the Composition
arps = [[from_shorthand(chord)[i] for i in (0, 1, 2, 3, 2, 1, 0, 1)]
for chord in mistyChart.progressionShorthandList]
notes_ = []
note_durations = []
for arp, chord_dur in zip(arps, mistyChart.durations):
if chord_dur == 1:
note_durations += [8 for _ in range(8)]
notes_ += [arp[i] for i in range(8)]
elif chord_dur == 2:
note_durations += [8 for _ in range(4)]
notes_ += [arp[i] for i in range(4)]
assert len(notes_) == len(note_durations)
t = Track()
for i, _ in enumerate(note_durations):
t.add_notes(notes_[i], note_durations[i])
# use the db to add/overlay a 251 lick in the right place
start_index = two_five_ones['hits'][0][
'start_index'] # refers to index in chord progression (not bar)
key = two_five_ones['hits'][0]['key']
durs = tfo_durs[0] # [1,1,1]
# chords_ = mistyChart.progressionShorthandList[start_index:start_index+len(twofiveone)]
### now search db for a 251 in F w/ duratons 1,1,1 then place at start_index
db = TinyDB(
r'C:\Users\Sam\Documents\Sidewinder\local files\jazz-licks-db-260720-new.json'
) # set-up / connection
# candidate_licks = find_partial_matches(db, {'tags':'251'}) # gives db id's (doc_id) # searching should be better, done on actual chord metadata
candidate_licks = find_by_chords_durations(db,
chords=['Gm7', 'C7', 'FM7'],
durations=[1, 1, 1])
# candidate_licks = [load_entry(db, doc_id) for doc_id in candidate_licks] # instantiate from db
lick251 = load_entry(db, candidate_licks[0])
# for doc_id in candidate_licks[-15:]:
# print(db.get(doc_id=doc_id))
# print(candidate_licks[0].chords)
# candidate_licks[0].to_midi()
notes_ = [nc[2] for bar in lick251.passage for nc in bar]
notes_ = [nc[0] if bool(nc) else None for nc in notes_]
durations_ = [nc[1] for bar in lick251.passage for nc in bar]
# [start of Misty ... 251 lick notes_,durations_ ... rest of Misty]
start_bar = 8 # could compute using start_index and misty_durs
t2 = Track_from_list(t[:start_bar - 1])
for n, d in zip(notes_, durations_):
t2.add_notes(n, d)
for bar in Track_from_list(
t[start_bar - 1 + 4:]
): # known that the lick is 4 bars, could probably compute from lick251.passage
t2 + bar
track_to_midi(t2, name='midi_out\\test251_lick_add')
def test_from_shorthand(self):
answers = { # Triads Augmented Sevenths Sixths 6/9 Slash chords
# Suspended chords 9 11 13 Altered chords Special Poly
# chords
"Amin": ["A", "C", "E"],
"Am": ["A", "C", "E"],
"A-": ["A", "C", "E"],
"Amaj": ["A", "C#", "E"],
"AM": ["A", "C#", "E"],
"A": ["A", "C#", "E"],
"Adim": ["A", "C", "Eb"],
"Aaug": ["A", "C#", "E#"],
"A+": ["A", "C#", "E#"],
"A7#5": ["A", "C#", "E#", "G"],
"Amaj7+5": ["A", "C#", "E#", "G"],
"Amaj7+": ["A", "C#", "E#", "G#"],
"Amin7+": ["A", "C#", "E#", "G"],
"Amin7": ["A", "C", "E", "G"],
"Am7": ["A", "C", "E", "G"],
"Ami7": ["A", "C", "E", "G"],
"A-7": ["A", "C", "E", "G"],
"Amaj7": ["A", "C#", "E", "G#"],
"AM7": ["A", "C#", "E", "G#"],
"Ama7": ["A", "C#", "E", "G#"],
"A7": ["A", "C#", "E", "G"],
"Amin7b5": ["A", "C", "Eb", "G"],
"Am7b5": ["A", "C", "Eb", "G"],
"Adim7": ["A", "C", "Eb", "Gb"],
"Am/M7": ["A", "C", "E", "G#"],
"Am/ma7": ["A", "C", "E", "G#"],
"AmM7": ["A", "C", "E", "G#"],
"Am/maj7": ["A", "C", "E", "G#"],
"Amin6": ["A", "C", "E", "F#"],
"Am6": ["A", "C", "E", "F#"],
"Amaj6": ["A", "C#", "E", "F#"],
"A6": ["A", "C#", "E", "F#"],
"A6/9": ["A", "C#", "E", "F#", "B"],
"A69": ["A", "C#", "E", "F#", "B"],
"A/G": ["G", "A", "C#", "E"],
"Amin/G": ["G", "A", "C", "E"],
"Am/M7/G": ["G", "A", "C", "E", "G#"],
"Asus2": ["A", "B", "E"],
"Asus4": ["A", "D", "E"],
"Asus47": ["A", "D", "E", "G"],
"A11": ["A", "E", "G", "D"],
"Asus": ["A", "D", "E"],
"Asus4b9": ["A", "D", "E", "Bb"],
"Asusb9": ["A", "D", "E", "Bb"],
"Amaj9": ["A", "C#", "E", "G#", "B"],
"A9": ["A", "C#", "E", "G", "B"],
"Amin9": ["A", "C", "E", "G", "B"],
"Am9": ["A", "C", "E", "G", "B"],
"A7#11": ["A", "C#", "E", "G", "D#"],
"Am11": ["A", "C", "E", "G", "D"],
"Amin11": ["A", "C", "E", "G", "D"],
"Amaj13": ["A", "C#", "E", "G#", "B", "F#",],
"A13": ["A", "C#", "E", "G", "B", "F#",],
"Am13": ["A", "C", "E", "G", "B", "F#",],
"A7b9": ["A", "C#", "E", "G", "Bb"],
"A7#9": ["A", "C#", "E", "G", "B#"],
"A7b5": ["A", "C#", "Eb", "G"],
"A6/7": ["A", "C#", "E", "F#", "G"],
"A67": ["A", "C#", "E", "F#", "G"],
"A5": ["A", "E"],
"Ahendrix": ["A", "C#", "E", "G", "C"],
"N.C.": [],
"NC": [],
"Dm|G": ["G", "B", "D", "F", "A"],
"Dm7|G": ["G", "B", "D", "F", "A", "C",],
"Am7|G7": ["G", "B", "D", "F", "A", "C", "E", "G",],
}
for x in answers:
self.assertEqual(
answers[x],
chords.from_shorthand(x),
"The shorthand of %s is not %s, expecting %s"
% (x, chords.from_shorthand(x), answers[x]),
)
def tritone_substitution(chord):
chord_notes = chords.from_shorthand(chord)
new_note = reduce_accidentals(tritone(chord_notes[0]))
new_chord = new_note + '7'
new_notes = chords.from_shorthand(new_chord)
return new_chord, new_notes
def ending(first_track, second_track, subject, key=r""):
if not bool(key):
key = 'C'
canon_subject = shift(subject, 2)
cadence = [chord.I(key), chord.IV(key), chord.V(key), chord.I(key)]
notes = []
for note in canon_subject[-1]:
if note[-1][0].name not in notes:
notes.append(note[-1][0].name)
bar = Bar(key=key)
# Hitta om det finns ett ackord med de sista noterna i subjektet i, i så fall, komplettera det ackordet
if len(notes) <= 2 or len(chord.determine(notes, True)) == 0:
chord_notes = [intervals.fourth(notes[0], key)]
else:
subject_chord = chord.determine(notes, True)[0]
chord_notes = chord.from_shorthand(subject_chord)
if len(chord_notes) != len(notes):
for note in notes:
chord_notes.remove(note)
else:
chord_notes = chord_notes[0]
bar.place_notes(chord_notes[random.randint(0, len(chord_notes) - 1)], 2)
first_track.add_bar(
bar) #Sätt något som passar med andra hälften av subjektet
while second_track[
-1].current_beat < 1: #Placing fitting notes in second to last bar
#print('test1')
duration = 2**random.randint(1, 3)
pitch = cadence[0][random.randint(1, len(cadence[0]) - 1)]
# If the randomized duration doesn't fit in the bar, make it fit
if 1 / duration > 1 - second_track[-1].current_beat:
duration = 1 / (1 - second_track[-1].current_beat)
# Place the new note in the bar
second_track[-1].place_notes(pitch, duration)
first_track[-1].place_notes(cadence[0][0], 2)
bar = Bar(key=key)
bar.place_notes(cadence[1][0], 2)
bar.place_notes(cadence[2][0], 2)
first_track.add_bar(bar)
bar = Bar(key=key)
bar.place_notes(cadence[3][0], 1)
first_track.add_bar(bar)
bar = Bar(key=key)
while bar.current_beat < 0.5:
#print('test2')
# Randomize pitch and duration of each note.
duration = 2**random.randint(1, 3)
pitch = cadence[1][random.randint(1, len(cadence[1]) - 1)]
# If the randomized duration doesn't fit in the bar, make it fit
if 1 / duration > 1 - bar.current_beat:
duration = 1 / (1 - bar.current_beat)
# Place the new note in the bar
bar.place_notes(pitch, duration)
while bar.current_beat < 1:
#print('test3')
duration = 2**random.randint(1, 3)
pitch = cadence[2][random.randint(1, len(cadence[2]) - 1)]
# If the randomized duration doesn't fit in the bar, make it fit
if 1 / duration > 1 - bar.current_beat:
duration = 1 / (1 - bar.current_beat)
# Place the new note in the bar
bar.place_notes(pitch, duration)
second_track.add_bar(bar)
bar = Bar(key=key)
bar.place_notes(cadence[3][2], 1)
second_track.add_bar(bar)
def test_from_shorthand(self):
answers = {
# Triads
"Amin" : ["A", "C", "E"],
"Am" : ["A", "C", "E"],
"A-" : ["A", "C", "E"],
"Amaj" : ["A", "C#", "E"],
"AM" : ["A", "C#", "E"],
"A" : ["A", "C#", "E"],
"Adim" : ["A", "C", "Eb"],
# Augmented
"Aaug" : ["A", "C#", "E#"],
"A+" : ["A", "C#", "E#"],
"A7#5" : ["A", "C#", "E#", "G"],
"Amaj7+5" : ["A", "C#", "E#", "G"],
"Amaj7+" : ["A", "C#", "E#", "G#"],
"Amin7+" : ["A", "C#", "E#", "G"],
# Sevenths
"Amin7" : ["A", "C", "E", "G"],
"Am7" : ["A", "C", "E", "G"],
"Ami7" : ["A", "C", "E", "G"],
"A-7" : ["A", "C", "E", "G"],
"Amaj7" : ["A", "C#", "E", "G#"],
"AM7" : ["A", "C#", "E", "G#"],
"Ama7" : ["A", "C#", "E", "G#"],
"A7" : ["A", "C#", "E", "G"],
"Amin7b5" : ["A", "C", "Eb", "G"],
"Am7b5" : ["A", "C", "Eb", "G"],
"Adim7" : ["A", "C", "Eb", "Gb"],
"Am/M7" : ["A", "C", "E", "G#"],
"Am/ma7" : ["A", "C", "E", "G#"],
"AmM7" : ["A", "C", "E", "G#"],
"Am/maj7" : ["A", "C", "E","G#"],
# Sixths
"Amin6" : ["A", "C", "E", "F#"],
"Am6" : ["A", "C", "E", "F#"],
"Amaj6" : ["A", "C#", "E", "F#"],
"A6" : ["A", "C#", "E", "F#"],
# 6/9
"A6/9" : ["A", "C#", "E", "F#", "B"],
"A69" : ["A", "C#", "E", "F#", "B"],
# Slash chords
"A/G" : ["G", "A", "C#", "E"],
"Amin/G" : ["G", "A", "C", "E"],
"Am/M7/G" : ["G", "A", "C", "E", "G#"],
# Suspended chords
"Asus2" : ["A", "B", "E"],
"Asus4" : ["A", "D", "E"],
"Asus47" : ["A", "D", "E", "G"],
"A11" : ["A", "E", "G", "D"],
"Asus" : ["A", "D", "E"],
"Asus4b9" : ["A", "D", "E", "Bb"],
"Asusb9" : ["A", "D", "E", "Bb"],
# 9
"Amaj9" : ["A", "C#", "E", "G#", "B"],
"A9" : ["A", "C#", "E", "G", "B"],
"Amin9" : ["A", "C", "E", "G", "B"],
"Am9" : ["A", "C", "E", "G", "B"],
# 11
"A7#11" : ["A", "C#", "E", "G", "D#"],
"Am11" : ["A", "C", "E", "G", "D"],
"Amin11" : ["A", "C", "E", "G", "D"],
# 13
"Amaj13" : ["A", "C#", "E", "G#", "B", "F#"],
"A13" : ["A", "C#", "E", "G", "B", "F#"],
"Am13" : ["A", "C", "E", "G", "B", "F#"],
# Altered chords
"A7b9" : ["A", "C#", "E", "G", "Bb"],
"A7#9" : ["A", "C#", "E", "G", "B#"],
"A7b5" : ["A", "C#", "Eb", "G"],
"A6/7" : ["A", "C#", "E", "F#", "G"],
"A67" : ["A", "C#", "E", "F#", "G"],
# Special
"A5" : ["A", "E"],
"Ahendrix" : ["A", "C#", "E", "G", "C"],
"N.C." : [],
"NC" : [],
# Poly chords
"Dm|G" : ["G", "B", "D", "F", "A"],
"Dm7|G" : ["G", "B", "D", "F", "A", "C"],
"Am7|G7" : ["G", "B", "D", "F", "A", "C", "E", "G"],
}
map(lambda x: self.assertEqual(answers[x], chords.from_shorthand(x),\
"The shorthand of %s is not %s, expecting %s" % (x, chords.from_shorthand(x), answers[x])),\
answers.keys())
"""Allen Forte has a theory of musical harmony based on set theory, and he says it's the key to
understanding some of the weirder 20th century music.
His analysis does a lot with "intervalic vectors," which are lists of each kind of interval in a chord.
I'm hoping to see what I can do with Forte-style analyses of music in the form of MIDI files.
"""
import mingus.core.chords as chords
import mingus.core.intervals as intervals
augurs_of_spring_chord = chords.from_shorthand("Eb7|Fb") # Example chord w/ interesting vector
interval_class_map = [0, 1, 2, 3, 4, 5, 6, 5, 4, 3, 2, 1] # Interval with i semitones is class A[i].
def interval_class(note_first, note_second):
""" class 1: minor seconds/major sevenths (1 or 11)
class 2: major seconds/minor sevenths (2 or 10)
class 3: minor thirds /major sixths (3 or 9)
class 4: major thirds /minor sixths (4 or 8)
class 5: perfect fourths & fifths (5 or 7)
class 6: tritones (6)
"""
return interval_class_map[intervals.measure(note_first, note_second)]
def chord_to_vector(chord):
vector = [0, 0, 0, 0, 0, 0]
for i_first, note_first in enumerate(chord): # For each note,
for i_second, note_second in enumerate(chord[i_first+1:]): # pair it with each subsq. note
determined_class = interval_class(note_first, note_second)
determine_key_and_function(chord)
elif args.action == 'tritone_substitution':
for chord in args.chords:
new_chord, new_notes = tritone_substitution(chord)
print("The tritone substitution of {} is {} ({})".format(
chord, new_chord, ', '.join(new_notes)))
elif args.action == 'reharmonize_v_to_ii_v':
for chord in args.chords:
ii_chord_type_short, chord = reharmonize_v_to_ii_v(chord)
print("II-V ({}, {})".format(ii_chord_type_short, chord))
elif args.action == 'ii_v_tritone_substitution':
for chord in args.chords:
chord_notes = chords.from_shorthand(chord)
new_note = reduce_accidentals(tritone(chord_notes[0]))
new_chord = new_note + '7'
ii_chord_type_short, chord = reharmonize_v_to_ii_v(new_chord)
print("{} {}".format(ii_chord_type_short, new_chord))
elif args.action == 'chord_modes':
chords = [
chords.determine_seventh(mode_func(args.key), shorthand=True)[0]
for mode_func in MODE_CHORD_FUNCTIONS
]
print(', '.join(chords))
elif args.action == '12_bar_blues':
for four_bars in twelve_bar_blues(args.key):
def tritone_substitution(chord):
chord_notes = chords.from_shorthand(chord)
new_note = reduce_accidentals(tritone(chord_notes[0]))
new_chord = new_note + '7'
new_notes = chords.from_shorthand(new_chord)
return new_chord, new_notes
from mingus.core import chords, intervals, notes, scales from mingus.containers import Note, NoteContainer, Bar, Track, Composition from mingus.containers.Instrument import MidiInstrument from mingus.midi import MidiFileOut from improv import generate_solo from subprocess import call num_progressions = 4 chords_list = ['CM', 'G7', 'CM7', 'FM7', 'G7', 'Am7', 'G7', 'C#+'] chords_bars = [] for chord in chords_list: chord_nc = NoteContainer(chords.from_shorthand(chord)) bar = Bar() bar.place_notes(chord_nc, 1) chords_bars.append(bar) solo_track = Track() chords_track = Track() for _ in range(num_progressions): for bar in generate_solo(chords_list): solo_track.add_bar(bar) for bar in chords_bars: chords_track.add_bar(bar) guitar = MidiInstrument() guitar.instrument_nr = 26 solo_track.instrument = guitar piano = MidiInstrument() piano.instrument_nr = 0 chords_track.instrument = piano
def create_walking_bassline(_chords, durations=None):
'''
Will assume 4/4 and create patterns like http://www.thejazzpianosite.com/jazz-piano-lessons/jazz-chord-voicings/walking-bass-lines/
params:
- _chords as a list of shorthand symbols
- durations as list of integers (for each chord)
'''
chords_ = [chord_note_and_family(c) for c in _chords]
if durations is None:
durations = [1] * len(chords_)
variants = ['pedal', 'arp7', 'arp', 'diat', 'chrom', 'dblchrm']
variant_weights = [.5, 5, 5, 2, .5, .3]
styles = random.choices(population=variants,
weights=variant_weights,
k=len(chords_))
bassline = []
new_durations = []
for i, chord in enumerate(chords_):
new_dur = [
4, 4, 4, 4
] # by default a full bar becomes 4 crotchets (TO-DO: add more variation)
chord = rebuild_chord_upwards([
Note(n) for n in from_shorthand(chords_[i][0] + chords_[i][1])
]) # ints
style = styles[i]
if style == 'pedal':
basspattern = [chord[0]] * 4
elif style == 'arp7':
basspattern = [chord[0], chord[1], chord[2], chord[-1]
] # get last in case triad (won't have a seventh)
elif style == 'arp':
basspattern = [chord[0], chord[1], chord[2],
chord[1]] # root, 3rd, 5th, 3rd
elif style == 'diat':
if chords_[i][1] == 'M7' or chords_[i][1] == 'Maj7':
basspattern = [chord[0], chord[1], chord[2],
chord[1]] # root, 3rd, 5th, 3rd
else:
basspattern = [
chord[0], chord[0] + 2, chord[1], chord[2]
] # TO-DO chords from other modes will need adjustment e.g. b9
elif style == 'chrom':
if 'minMaj' in chords_[i][1]:
basspattern = [chord[0], chord[1], chord[2],
chord[3]] # root, 3rd, 5th, 7th
elif 'm' in chords_[i][1]:
basspattern = [
chord[0], chord[1], chord[2] - 1, chord[1] + 1
] # root, minor 3, flat 5, b11 (leading tone for V/II-7)
elif 'M' in chords_[i][1]:
basspattern = [chord[0], chord[0] + 1, chord[0] + 2,
chord[2]] # root, b9, 2, 5th
elif chords_[i][1] in ['7', '7b9']:
basspattern = [chord[0], chord[1], chord[2],
chord[0] + 1] # root, 3rd, 5th, b9
elif chords_[i][1] in ['9']:
basspattern = [
chord[0], chord[1], chord[0] + 2, chord[3] - 12
] # root, 3rd, 9th, down to b7
else:
print(
f'No chromatic basspattern given for chord type {chords_[i][1]}'
)
elif style == 'dblchrm':
if chords_[i][1] == 'M7' or chords_[i][1] == 'Maj7':
basspattern = [chord[0], chord[2], chord[2] + 2,
chord[0] + 1] # root, 5th, 6th, b9
else:
basspattern = [chord[0], chord[0], chord[2] - 1,
chord[2] - 1] # root, root, b5, b5
# TO-DO: need to drop octaves where we end up going to high...
if durations[i] == 2:
basspattern = [basspattern[0], basspattern[3]]
new_dur = [4, 4]
if durations[i] == 4:
basspattern = [basspattern[0]]
new_dur = [4]
bassline.append(
basspattern) # as list of sublists of ints (one sublist per bar)
new_durations += new_dur
amount_of_extra_leading_tones = 0.25
for i, chord in enumerate(chords_):
roll = random.random()
if roll < amount_of_extra_leading_tones and i < len(chords_) - 1:
next_root = bassline[i + 1][0]
bassline[i][-1] = next_root - 1
bassline = notes_durations_to_track(
[Note().from_int(int(n) - 12) for b in bassline for n in b],
new_durations) # - 12 to bring down to octave 3
return bassline
def generate_solo(chord_list): notes = [] bars = [] note = random.choice(chords.from_shorthand(chord_list[0])) note = Note(note) syncopate = random.randrange(1) == 0 bar = Bar() duration = random.choice([4, 8, 16]) if syncopate: bar.place_notes(None, duration) bar.place_notes(note, duration) notes.append(note) first = True for chord_name in chord_list: if first: beat = bar.current_beat first = False else: bar = Bar() beat = 0 scale = generate_scale(chord_name) while beat < 1: if beat % .25 == 0: duration = random.choice([4, 8, 16]) elif beat % .125 == 0: duration = random.choice([8, 16]) rest = random.randrange(10) == 0 # 1/10 if rest: bar.place_notes(None, duration) else: beginning = beat == 0 stepwise = random.randrange(5) != 0 # 4/5 leap = random.randrange(2) == 0 # 1/2 if len(notes) >= 2: prev_motion = measure_motion(notes[-2], notes[-1], scale) else: prev_motion = random.choice([-1, 1]) direction = int(math.copysign(1, prev_motion)) resolve = False if abs(prev_motion) == 2: if len(notes) >= 3: prev2_motion = measure_motion(notes[-3], notes[-2], scale) else: prev2_motion = 0 if prev2_motion == 2: if random.randrange(2) == 0: stepwise, leap = False, False else: stepwise, leap = False, False elif abs(prev_motion) > 2: stepwise, resolve = True, True if beginning: chord_tones = chords.from_shorthand(chord_name) note = closest_note(notes[-1], chord_tones) elif stepwise: if resolve: interval = -direction else: interval = random.choice([direction, direction, -direction]) # 2/3 probability to continue in same direction if notes[-1].octave <= 3: interval = 1 elif notes[-1].octave >= 5: interval = -1 note = note_at_interval(notes[-1], interval, scale) elif leap: # (1 - 4/5) * 1/2 = 1/10 interval = random.choice([-1, 1]) \ * random.choice(range(3, len(scale))) note = note_at_interval(notes[-1], interval, scale) else: # outlining a chord interval = 2 * direction note = note_at_interval(notes[-1], interval, scale) bar.place_notes(note, duration) notes.append(note) beat = bar.current_beat bars.append(bar) print(notes) return bars
def test():
return jsonify({"C": ch.from_shorthand("C")})
for chord in args.chords:
determine_key_and_function(chord)
elif args.action == 'tritone_substitution':
for chord in args.chords:
new_chord, new_notes = tritone_substitution(chord)
print("The tritone substitution of {} is {} ({})".format(chord, new_chord, ', '.join(new_notes)))
elif args.action == 'reharmonize_v_to_ii_v':
for chord in args.chords:
ii_chord_type_short, chord = reharmonize_v_to_ii_v(chord)
print("II-V ({}, {})".format(ii_chord_type_short, chord))
elif args.action == 'ii_v_tritone_substitution':
for chord in args.chords:
chord_notes = chords.from_shorthand(chord)
new_note = reduce_accidentals(tritone(chord_notes[0]))
new_chord = new_note + '7'
ii_chord_type_short, chord = reharmonize_v_to_ii_v(new_chord)
print("{} {}".format(ii_chord_type_short, new_chord))
elif args.action == 'chord_modes':
chords = [chords.determine_seventh(mode_func(args.key), shorthand=True)[0]
for mode_func in MODE_CHORD_FUNCTIONS]
print(', '.join(chords))
elif args.action == '12_bar_blues':
for four_bars in twelve_bar_blues(args.key):
print('\t'.join(four_bars))
def play_solo_bar_with_chord(chord_name): chord = NoteContainer(chords.from_shorthand(chord_name)) solo = solo_bar(chord_name) fluidsynth.play_NoteContainer(chord, 13) fluidsynth.play_Bar(solo, 10) fluidsynth.stop_NoteContainer(chord, 13)
"""Allen Forte has a theory of musical harmony based on set theory, and he says it's the key to
understanding some of the weirder 20th century music.
His analysis does a lot with "intervalic vectors," which are lists of each kind of interval in a chord.
I'm hoping to see what I can do with Forte-style analyses of music in the form of MIDI files.
"""
import mingus.core.chords as chords
import mingus.core.intervals as intervals
augurs_of_spring_chord = chords.from_shorthand(
"Eb7|Fb") # Example chord w/ interesting vector
interval_class_map = [0, 1, 2, 3, 4, 5, 6, 5, 4, 3, 2,
1] # Interval with i semitones is class A[i].
def interval_class(note_first, note_second):
""" class 1: minor seconds/major sevenths (1 or 11)
class 2: major seconds/minor sevenths (2 or 10)
class 3: minor thirds /major sixths (3 or 9)
class 4: major thirds /minor sixths (4 or 8)
class 5: perfect fourths & fifths (5 or 7)
class 6: tritones (6)
"""
return interval_class_map[intervals.measure(note_first, note_second)]
def chord_to_vector(chord):
vector = [0, 0, 0, 0, 0, 0]
for i_first, note_first in enumerate(chord): # For each note,
def get_chord(self, chord, scope):
notes = chords.from_shorthand(chord)
return self.get_notes(notes, scope)
def read_notes(fn, notes):
with open(fn) as f:
content_lines = f.readlines()
content = []
for line in content_lines:
if not (line.startswith('#')):
content.extend(line.split())
elif (line.startswith('### ')):
meta = line[4:]
var, val = meta.split(':')
print(var + '\t' + val)
#
# loop through content, computing start and end events
#
currtime = 0
tie_forward = False
for line in content:
tie_backward = tie_forward
tie_forward = False
if line[:4] in "<key:": # get key for interpreting chords
# print "key:", line[5:-1], "keylet:", line[5:6]
nkey = pitch_class_dict[line[5:6]]
key = line[5:-1]
if key[-1] == 'm':
key = key.lower()
# key=key[:-1].lower()
# print "key:", key, "nkey:", nkey
if line[0] in "<": # skip tags such as <sot>, <eot>, <time>, <bar>
continue
# print("line:", line)
note, duration = line.split(":")
if duration.endswith('t'):
tie_forward = True
duration = duration[:-1]
try:
dnum, ddenom = duration.split("/")
duration_num = float(dnum) / float(ddenom)
except:
duration_num = int(duration)
if note[0] in "ABCDEFG":
n = NoteContainer(Note(note))
velocity = velocity_normal
if tie_backward:
velocity = velocity_slur
notes.append([currtime, n, "S", velocity])
notes.append([currtime + duration_num, n, "E"])
currtime += duration_num
elif note == "rest":
currtime += duration_num
elif note == "backup":
currtime = currtime - duration_num
elif note == "forward":
currtime = currtime + duration_num
#
# roman numeral chords, e.g. rchord-viidim7:1
#
elif "rchord" in note: # roman numeral chord such as I, IV
x, c = note.split('-')
simple_c = simplify_chord(c)
log("rchord: " + c + "\tsimple: " + simple_c + "\tkey:" + key)
progression = progressions.to_chords([simple_c], key)
chord = NoteContainer(progression[0])
notes.append([currtime, chord, "S", velocity_chord])
notes.append([currtime + duration_num, chord, "E"])
currtime += duration_num
#
# numeric chord, e.g. nchord-145 = tonic (1) + third (16) + fifth (128)
#
elif "nchord" in note:
x, c = note.split('-')
# print "--chord:", c, "key:", key
nc = int(c)
n = 0
while nc > 0:
if nc & 1:
note = note_dict[(n + nkey) % 12]
# print " --note", note
notes.append(
[currtime, [n + nkey + 48], "S", velocity_chord])
notes.append(
[currtime + duration_num, [n + nkey + 48], "E"])
n += 1
nc = nc // 2
currtime += duration_num
elif "chord" in note: # chord such as Am7
x, c = note.split('-')
chord = NoteContainer(chords.from_shorthand(c))
notes.append([currtime, chord, "S", velocity_chord])
notes.append([currtime + duration_num, chord, "E"])
currtime += duration_num
else:
print "Illegal music token item:", note