def generate_blues_scale(key="C"):
"""Returns an ordered list of the notes of the blues scale in this key. \
For example: if the key is set to 'C', this function will return \
`['C', 'D#', 'F', 'F#', 'G', 'A#']`. \
This function will raise an !NoteFormatError if the key isn't recognised"""
if not (notes.is_valid_note(key)):
raise NoteFormatError, "Unrecognised format for key '%s'" % key
result = []
fifth_index = notes.fifths.index(key[0])
result.append(intervals.unison(key))
result.append(notes.diminish(intervals.third(key, key)))
result.append(intervals.third(key, key))
result.append(intervals.fourth(key, key))
result.append(notes.diminish(intervals.fifth(key, key)))
result.append(intervals.fifth(key, key))
result.append(notes.diminish(intervals.seventh(key, key)))
# Remove redundant #'s and b's from the result
result = map(notes.remove_redundant_accidentals, result)
tonic = result.index(notes.remove_redundant_accidentals(key))
result = result[tonic:] + result[:tonic]
return result
def common_note(phrase1, phrase2, key, mode):
phrase1_list = []
percentage = 0
number_notes = 0
key1 = key
key2 = key
if mode != "none" :
if phrase1[0]==0 :
key1 = key
elif phrase1[0]==4 :
key1 = intervals.fourth(key, key)
elif phrase1[0]==5:
key1 = intervals.fifth(key, key)
if phrase2[0]==0 :
key2 = key
elif phrase2[0]==4 :
key2 = intervals.fourth(key, key)
elif phrase2[0]==5:
key2 = intervals.fifth(key, key)
for bars in phrase1[1][3] :
for n in bars :
notes = get_note(n, key1)
phrase1_list.append(notes)
for bars in phrase2[1][3] :
for n in bars :
number_notes+=1
if get_note(n, key2) in phrase1_list:
percentage+=1
return (percentage/number_notes)*100
def get_progression_key(note_int, key):
if note_int == 1 :
p_key = intervals.unison(key)
if note_int == 4 :
p_key = intervals.fourth(key, key)
if note_int == 5 :
p_key = intervals.fifth(key, key)
return p_key
def second_voice_ending(second_track, key):
first = key
fourth = intervals.fourth(key, key)
fifth = intervals.fifth(key, key)
second_track.add_notes(Note(first, 3), 2)
second_track.add_notes(Note(fourth, 3), 2)
second_track.add_notes(Note(fifth, 3), 2)
second_track.add_notes(Note(fifth, 3), 1)
def triad(note, key):
"""Return the triad on note in key as a list.
Examples:
>>> triad('E', 'C')
['E', 'G', 'B']
>>> triad('E', 'B')
['E', 'G#', 'B']
"""
return [note, intervals.third(note, key), intervals.fifth(note, key)]
def triad(note, key):
"""Return the triad on note in key as a list.
Examples:
>>> triad('E', 'C')
['E', 'G', 'B']
>>> triad('E', 'B')
['E', 'G#', 'B']
"""
return [note, intervals.third(note, key), intervals.fifth(note, key)]
def gap_last_first_note(phrase1, phrase2, key, mode):
key1 = key
key2 = key
if mode != "none" :
if phrase1[0]==0 :
key1 = key
elif phrase1[0]==4 :
key1 = intervals.fourth(key, key)
elif phrase1[0]==5:
key1 = intervals.fifth(key, key)
if phrase2[0]==0 :
key2 = key
elif phrase2[0]==4 :
key2 = intervals.fourth(key, key)
elif phrase2[0]==5:
key2 = intervals.fifth(key, key)
last_note_1 = phrase1[1][3][phrase2[1][1]-1][-1:][0]
last_note_2 = phrase2[1][3][phrase2[1][1]-1][-1:][0]
last_note_1 = get_note(last_note_1, key1)
last_note_2 = get_note(last_note_2, key2)
return intervals.measure(last_note_1, last_note_2)
def get_note_pattern(pattern, key):
if pattern[0] == 1 :
note = intervals.unison(key)
elif pattern[0] == 2 :
note = intervals.second(key, key)
elif pattern[0] == 3 :
note = intervals.third(key, key)
elif pattern[0] == 4 :
note = intervals.fourth(key, key)
elif pattern[0] == 5 :
note = intervals.fifth(key, key)
elif pattern[0] == 6 :
note = intervals.sixth(key, key)
elif pattern[0] == 7 :
note = intervals.seventh(key, key)
if pattern[3] == "bemol":
note = notes.diminish(note)
elif pattern[3] == "diese" :
note = notes.augment(note)
return note
'''
Created on Jan 6, 2017
@author: stephenkoh
'''
import mingus.core.intervals as intervals
key = str(input('Please enter a key: '))
note = str(input('Please enter a note: '))
third = intervals.third(note, key)
fifth = intervals.fifth(note, key)
print(note, third, fifth)
def generate_bar(previews_note, bar, key, mode, progression, progression_list, nb_p, pattern_index):
if mode == 'mixolydien' :
if progression == 'IV' :
key = intervals.fourth(key, key)
elif progression == 'V' :
key = intervals.fifth(key, key)
b = Bar(key, (4, 4))
position_note = 0
already_used=[]
list_note = []
for bar_note in bar :
if position_note not in already_used :
is_chord = chord_length(bar_note, bar, position_note)
if is_chord[2] :
note_list = []
# c est un accord
for p_note in bar[is_chord[0]:is_chord[1]+1] :
note_str = get_note(p_note, key)
note = Note(note_str, p_note[5])
if previews_note is not None:
if p_note[4]=='+':
if int(note) < previews_note :
note.octave_up()
elif p_note[4]=='-':
if int(note) > previews_note :
note.octave_down()
current_progression = progression_list[0][nb_p]
note = change_note_if_needed(bar_note[2], note, pattern_index, current_progression, bar_note, key)
previews_note = int(note)
#appeler best_note la aussi
note_list.append(note)
list_note.append(note)
for n in range(is_chord[0], is_chord[1]+1):
already_used.append(n)
b.place_notes(note_list, bar_note[1])
else :
note_str = get_note(bar_note, key)
note = Note(note_str, bar_note[5])
if previews_note is not None:
if bar_note[4]=='+':
if int(note) < previews_note :
note.octave_up()
elif bar_note[4]=='-':
if int(note) > previews_note :
note.octave_down()
# la un faut appeler le truc pour modifier la note
current_progression = progression_list[0][nb_p]
note = change_note_if_needed(bar_note[2], note, pattern_index, current_progression, bar_note, key)
previews_note = int(note)
list_note.append(note)
b.place_notes(note, bar_note[1])
already_used.append(position_note)
position_note+=1
return (b, previews_note, list_note)
def generate_end_bars(previews_bar, previews_bar_notes, pattern_index, key, mode):
# on genere deux mesures de fin
# previews_bar = format de la bdd
nb_notes = get_nb_notes(previews_bar)
first_bar = Bar()
last_bar = Bar()
last_index = len(previews_bar_notes)-1
last_note = previews_bar_notes[last_index]
for i in range(1, nb_notes[0]):
time = first_bar.current_beat + 1
list_compatible = get_compatible_notes(pattern_index, previews_bar_notes, key, time)
list_length = get_max_length_note(first_bar, nb_notes[0]-i)
best_notes = get_best_notes(list_compatible, last_note)
chosen_note = best_notes[random.randint(0, len(best_notes)-1)]
chosen_length = list_length[random.randint(0, len(list_length)-1)]
first_bar.place_notes(chosen_note.name, chosen_length)
if first_bar.length - first_bar.current_beat != 0 :
print("ajout de silence")
space_left = 1.0 / (first_bar.length - first_bar.current_beat)
first_bar.place_rest(space_left)
for i in range(1, nb_notes[1]):
time = last_bar.current_beat + 1
list_compatible = get_compatible_notes(pattern_index, previews_bar_notes, key, time)
list_length = get_max_length_note(last_bar, nb_notes[1]-i)
best_notes = get_best_notes(list_compatible, last_note)
chosen_note = best_notes[random.randint(0, len(best_notes)-1)]
chosen_length = list_length[random.randint(0, len(list_length)-1)]
#chosen_note.octave
chord_possible = []
chord_possible.append(intervals.unison(key, key))
chord_possible.append(intervals.fourth(key, key))
chord_possible.append(intervals.fifth(key, key))
intervals_last = []
for note_possible in chord_possible :
test = []
test.append(intervals.measure(note_possible, last_note.name))
test.append(intervals.measure(last_note.name, note_possible))
intervals_last.append(min(test))
for i,j in enumerate(intervals_last) :
if j == min(intervals_last) :
index = i
break
chosen_chord = chord_possible[index]
if mode == "mixolydien" :
chord = chords.triad(chosen_chord, key)
chord_list = []
for note in chord :
note_m = Note(note, chosen_note.octave)
chord_list.append(note_m)
last_note = note_m
last_bar.place_notes(chord_list, chosen_length)
else :
chord = chords.triad(chosen_chord, key)
chord_list = []
for note in chord :
note_m = Note(note, chosen_note.octave)
last_note = note_m
chord_list.append(note_m)
last_bar.place_notes(chord_list, chosen_length)
if last_bar.length - last_bar.current_beat != 0 :
print("ajout de silence")
space_left = 1.0 / (last_bar.length - last_bar.current_beat)
last_bar.place_rest(space_left)
return [first_bar, last_bar]