def move_chord(chord: Chord, pitch: Pitch) -> Chord:
while abs(chord_mean_distance(chord, pitch)) > 12.0:
dist = chord_mean_distance(chord, pitch)
if dist < 0:
chord = chord.transpose(12)
else:
chord = chord.transpose(-12)
return chord
class SpotifyChord():
def __init__(self,
spotify_figure: str = None,
figure: str = None,
bass: str = None,
root: str = None,
kind: str = None,
chord: Chord = None):
if spotify_figure == 'NC':
self.bass = None
self.root = None
self.chord = Chord()
self.structure = 'NC'
elif chord:
assert root and figure
self.bass = Pitch(bass[1:]) if bass else None
self.root = Pitch(root)
self.chord = chord
self.structure = spotify_figure if spotify_figure else figure
elif figure:
assert root
chord_symbol = ChordSymbol(figure=figure)
self.chord = Chord(chord_symbol.pitches)
self.bass = Pitch(bass[1:]) if bass else None
if self.bass:
self.bass.octave = None
self.root = Pitch(root)
self.root.octave = None
self.structure = figure
else:
assert root and kind
chord_symbol = ChordSymbol(bass=bass, root=root, kind=kind)
self.chord = Chord(chord_symbol.pitches)
self.bass = Pitch(bass) if bass else None
if self.bass:
self.bass.octave = None
self.root = Pitch(root)
self.root.octave = None
self.structure = chord_symbol.figure
def __str__(self):
return self.structure
def __repr__(self):
return self.__str__()
def __hash__(self) -> int:
return self.structure.__hash__()
def __eq__(self, o: object) -> bool:
if type(o) is not SpotifyChord:
return False
return self.structure.__eq__(o.structure)
def has_same_notes(self, a_chord: 'SpotifyChord') -> bool:
if self.get_num_notes() != a_chord.get_num_notes():
return False
for i in range(self.get_num_notes()):
if self.note_at(i) != a_chord.note_at(i):
return False
return True
def get_num_notes(self) -> int:
if self.is_no_chord():
return 0
return len(self.chord.pitches)
@classmethod
def from_bass_root_kind(cls, bass, root, kind):
return SpotifyChord(bass=bass, root=root, kind=kind)
@classmethod
def from_figure(cls, figure: str) -> 'SpotifyChord':
# if figure of type Xkind/X- : build it from an other enharmonic as bass
if len(figure.split('/')) > 1 and list(figure)[0] == list(
figure.split('/')[1])[0]:
return SpotifyChord.from_figure(
list(figure)[0] + '/' + Note(list(figure.split(
'/')[1])[0]).pitch.getAllCommonEnharmonics()[0].name)
#if figure == 'Am/A-':
# return SpotifyChord(bass='A-', root='A', kind='minor')
#if figure == 'E7/E-':
# return SpotifyChord(bass='E-', root='E', kind='dominant-seventh')
if figure == 'NC':
return SpotifyChord(spotify_figure='NC')
root, structure, bass = split(figure)
spotify_figure = None
if structure in [
'', '+', '7+', '7+ add 9', 'dim', 'add 2', 'add 4', '7 add 11',
'm add 2', 'm7 add 4', 'm add 4', 'maj7', 'M7', 'M9', 'M11',
'M13', '/o7', 'o7', 'm', 'm6', 'm7', 'm9', 'm11', 'm13', '6',
'7', '9', '11', '13', 'sus', 'sus2', 'sus4', 'sus add 7',
'm add 9', 'm7 add 9', 'm7 add 11', '6 add 9', 'm6 add 9',
'pedal', 'power'
]:
# explicit_figure = figure
explicit_figure = root + structure + bass
elif structure == '9 alter b5':
explicit_figure = root + bass + '9b5'
elif structure == '7 alter b5':
explicit_figure = root + bass + '7b5'
elif structure == '7 alter #5':
explicit_figure = root + bass + '7#5'
elif structure == 'm7 alter b5':
explicit_figure = root + bass + '/o7'
elif structure == '7 add 4 subtract 3':
explicit_figure = root + bass + 'sus add 7'
elif structure == 'sus add 7 add 9':
# TODO Check if the 7th should be diminished
explicit_figure = root + bass + ',45b79'
spotify_figure = root + bass + '9sus4 '
elif structure == 'sus add 7 add 13':
# TODO Check if the 7th should be diminished
# Pitches are not in the right order
explicit_figure = root + bass + ',45b713'
spotify_figure = root + bass + 'sus4 add7 add13'
elif structure == 'sus add 7 add 9 add 13':
# TODO Check if the 7th should be diminished
# Pitches are not in the right order
explicit_figure = root + bass + ',45b7913'
spotify_figure = root + bass + 'sus4 add7 add9 add13'
elif structure == 'sus add 7 add b9':
# TODO Check if the 7th should be diminished
explicit_figure = root + bass + ',45b7b9'
spotify_figure = root + bass + 'b9sus4 '
elif structure == 'sus add 7 add 9 add 11 add 13':
explicit_figure = root + bass + ',45791113'
spotify_figure = root + bass + '13sus4 '
elif structure == 'pedal':
explicit_figure = root + bass + 'pedal'
elif structure == '7 add #11':
explicit_figure = root + bass + '7 #11'
elif structure == '7 alter #5 add #9':
explicit_figure = root + bass + '+7 #9'
elif structure == '9 alter #5':
explicit_figure = root + bass + '9 #5'
elif structure == 'm alter #5':
explicit_figure = root + bass + 'm #5'
elif structure == '7 alter b5 add b9':
explicit_figure = root + bass + '7 b5b9'
elif structure == 'm7 alter #5':
explicit_figure = root + bass + 'm7 #5'
elif structure == '7 alter b5 add #9':
explicit_figure = root + bass + '7 b5#9'
elif structure == '7 add b9':
explicit_figure = root + bass + '7 b9'
elif structure == '7 add #9':
explicit_figure = root + bass + '7 #9'
elif structure == '9 add #11':
explicit_figure = root + bass + '9 #11'
elif structure == '7 add b13':
explicit_figure = root + bass + '7 b13'
elif structure == '7 add #9 add #11':
explicit_figure = root + bass + '7 #9#11'
elif structure == '7 add b9 add b13':
explicit_figure = root + bass + '7 b9b13'
elif structure == 'add 9':
explicit_figure = root + bass + 'add9'
elif structure == 'maj7 add #11':
explicit_figure = root + bass + 'maj7 #11'
elif structure == 'sus add b9 add b9':
explicit_figure = root + bass + 'sus b9'
elif structure == 'm7 add b9':
explicit_figure = root + bass + 'm7 b9'
elif structure == 'add #11':
explicit_figure = root + bass + ',#11'
elif structure == '7 subtract 5 add b9 add #9 add #11 add b13':
# TODO Pitches are not in the correct order
explicit_figure = root + bass + ',3b7b9#9#11b13'
spotify_figure = root + bass + '7 -5 b9 #9 #11 b13'
elif structure == '13 alter b5':
explicit_figure = root + bass + '13b5'
elif structure == 'alter b5':
explicit_figure = root + bass + ',b5'
elif structure == 'maj7 alter #5':
explicit_figure = root + bass + 'maj7 #5'
elif structure == 'maj7 alter b5':
explicit_figure = root + bass + 'maj7 b5'
elif structure == '7 alter #5 add b9':
explicit_figure = root + bass + '+7 b9'
elif structure == '7 alter #5 add #9 add #11':
explicit_figure = root + bass + '+7 #9#11'
elif structure == '7+ add b9':
explicit_figure = root + bass + '+7 b9'
elif structure == '7 add #9 add b13':
explicit_figure = root + bass + '7 #9b13'
elif structure == 'M9 add #11':
explicit_figure = root + bass + 'M9 #11'
elif structure == 'M9 alter b5':
explicit_figure = root + bass + 'M9 b5'
elif structure == '7 add #11 add b9 add #5':
explicit_figure = root + bass + '+7 b9#11'
elif structure in ['7+ add #9', '7 add #9 alter #5']:
explicit_figure = root + bass + '+7 #9'
elif structure == 'm11 alter b5':
explicit_figure = root + bass + 'm11 b5'
elif structure == 'bpedal':
# TODO This is a hack, replacing the 'b' by a '-'
explicit_figure = root + bass + '-pedal'
elif structure in ['13 add #11', '13 alter #11']:
# TODO Check if a better solution exists
# 1) This chord should be 13 alter #11
# 2) The order of the pitches is wrong
explicit_figure = root + bass + ',35b7913#11'
spotify_figure = '13 alter #11'
elif structure in ['13 add b9', '13 alter b9']:
# TODO Check if a better solution exists
# 1) This chord should be 13 alter #11
# 2) The order of the pitches is wrong
explicit_figure = root + bass + ',35b7b91113'
spotify_figure = '13 alter b9'
elif structure in ['13 add b9', '13 alter b9']:
# TODO Check if a better solution exists
# 1) This chord should be 13 alter #11
# 2) The order of the pitches is wrong
explicit_figure = root + bass + ',35b7b91113'
spotify_figure = '13 alter b9'
elif structure == '13 subtract 5 subtract 11':
# TODO Check if a better solution exists
# 1) This chord should be 13 alter #11
# 2) The order of the pitches is wrong
explicit_figure = root + bass + ',3b7913'
spotify_figure = '13 sus4 omit 11'
elif structure == 'm9 alter b5':
explicit_figure = root + bass + 'm9 b5'
elif structure == '7 subtract 5':
explicit_figure = root + bass + '7 omit5'
elif structure == 'pedal add 5':
explicit_figure = root + bass + 'omit3'
else:
raise ValueError('unknown chord symbol ' + root + bass + structure)
return SpotifyChord(spotify_figure=spotify_figure,
figure=explicit_figure,
bass=bass,
root=root)
def note_string(self) -> str:
if self.is_no_chord():
return ''
return str([str(p) for p in self.chord.pitches])
def is_no_chord(self):
return self.structure == 'NC'
def transposed_to(
self,
pitch: Pitch = Pitch()) -> Tuple['SpotifyChord', Optional[Interval]]:
if self.is_no_chord():
return self, None
tr_int = interval.notesToInterval(self.root, pitch)
return self.transposed_by(tr_int), tr_int
def transposed_by(self, tr_int: Interval) -> 'SpotifyChord':
if self.is_no_chord():
return self
if tr_int.semitones == 0:
return deepcopy(self)
new_root = _get_transposed_pitch(self.root, tr_int.directedName)
new_root.simplifyEnharmonic(inPlace=True)
new_chord = self.chord.transpose(tr_int, inPlace=False)
if self.bass:
new_bass = _get_transposed_pitch(self.bass, tr_int.directedName)
new_bass.simplifyEnharmonic(inPlace=True)
new_structure = self.structure.replace('/' + str(self.bass),
'/' + str(new_bass), 1)
new_structure = new_structure.replace(str(self.root),
str(new_root), 1)
return SpotifyChord(root=str(new_root),
bass='/' + str(new_bass) if new_bass else None,
chord=new_chord,
figure=new_structure)
else:
new_structure = self.structure.replace(str(self.root),
str(new_root), 1)
return SpotifyChord(root=str(new_root),
chord=new_chord,
figure=new_structure)
def note_at(self, i):
if self.is_no_chord() or i >= self.get_num_notes():
return None
return self.chord.pitches[i]
