def diminished7_tones(self):
if "major" in self.name:
diminished7_letters = [
self.root,
tones.flatten(self.III),
tones.flatten(self.V),
tones.flatten(tones.flatten(self.VII))
]
elif "harmonic" in self.name:
diminished7_letters = [
self.root, self.iii,
tones.flatten(self.V),
tones.flatten(self.vii)
]
elif "minor" in self.name:
diminished7_letters = [
self.root, self.iii,
tones.flatten(self.V),
tones.flatten(self.vii)
]
else:
raise ValueError(
"Cannot provide diminished 7 tones for key {}".format(
self.name))
return [t for t in tones.all_tones if letter(t) in diminished7_letters]
def bridge_chords(tone):
self.set_key(letter(tone) + ' major')
tones = self.arpeggio(tone, -8)
return {
'treble': chords([subset(tones, 1, 4)], bridge_rhythm),
'bass': chords([subset(tones, 5, 8)], bridge_rhythm)
}
def write_score(self):
# The looped section programmatically builds a series of scales
# Note that the bass clef is just a tansposition of the treble clef
looped = {"treble": []}
for start in self.scale('c`', 'c``'):
looped["treble"] += self.scale(start, 8, 8)
looped["bass"] = self.transpose(looped["treble"], -1, 'octave')
# The smart section programmatically builds a series of scales in different keys
# Note how we use list comprehension to avoid a for loop, and use step = 2 to play every other note in the treble clef
start_notes = self.scale('c```', 'c``')
smart = {
"treble": [scale(start, -8, key=letter(start) + " major", dur=8, step=2) for start in start_notes],
"bass": [scale(self.transpose(start, -1, 'octave'), -8, key=letter(start) + " major", dur=8) for start in start_notes]
}
self.score = join(looped, smart)
def create_chords(self):
self.aI = self.arpeggio(self.key.root, 6)
self.aiii = [
self.transpose(t, -1) if letter(t) == self.key.root else t
for t in self.aI
]
self.aiii7 = [
self.transpose(t, 1) if letter(t) == self.key.root else t
for t in self.aI
]
self.aii = self.transpose(self.aI, 1)
self.aii7 = self.transpose(select(self.aii, 1), -1) + subset(
self.aii, 2, 6)
self.bI7 = self.arpeggio(self.transpose(self.key.root, -1, 'octave'),
4) + self.arpeggio7(
self.transpose(self.key.root, 9), 4)
self.biii = arpeggio(self.transpose(self.key.root, -8),
4,
key=self.IIIt)
self.biii += arpeggio(self.transpose(self.key.root, 9),
4,
key=self.IIIt)
self.biii7 = [
self.transpose(t, i)
for t, i in zip(self.bI7, [1, 0, 0, 1, -1, 0, 0, 0])
]
self.bii7 = self.transpose(subset(self.bI7, 1, 4), 1) + self.transpose(
subset(self.bI7, 5, 7), -1) + select(self.bI7, 8)
self.bii7d5 = [
self.transpose(t, i, 'semitone')
for t, i in zip(self.bii7, [0, 0, -1, 0, 0, 0, -1, 0])
]
self.diii = self.transpose(
self.transpose(self.arpeggio(self.key.root, 3), 2), 1, 'octave')
self.dI = [self.transpose(self.key.root, 2, 'octave')]
self.dii = self.transpose(
[self.key.root,
self.transpose(self.IIt.v, -1, "semitone")], 2,
'octave') + [self.transpose(self.key.v, 2, 'octave')]
def tremble(tone):
bass_tone = self.transpose(tone, -2, 'octave')
start_grace = grace(notes([self.transpose(bass_tone, -1, 'semitone'), bass_tone, self.transpose(bass_tone, 2, 'semitone')], 32))
stop_grace = notes([self.transpose(bass_tone, -1, 'semitone'), bass_tone], 32)
treble_chord = chord(arpeggio(tone, -4, key=letter(tone) + ' major'), 2)
if tone == 'b`':
add(treble_chord, 'a')
return {
'treble': treble_chord,
'bass': start_grace + after_grace(note(bass_tone, 2, ornamentation='trill'), stop_grace)
}
def dominant7_tones(self):
if "major" in self.name:
dominant7_letters = self.arpeggio_letters + [
tones.flatten(self.VII)
]
elif "harmonic" in self.name:
dominant7_letters = [
self.root,
tones.sharpen(self.iii), self.V,
tones.flatten(self.VII)
]
elif "minor" in self.name:
dominant7_letters = [
self.root,
tones.sharpen(self.iii), self.V, self.VII
]
else:
raise ValueError(
"Cannot provide dominant 7 tones for key {}".format(self.name))
return [t for t in tones.all_tones if letter(t) in dominant7_letters]
def scale_subset(self, positions):
index_of_root = self.letters.index(self.root)
custom_letters = [(self.letters * 2)[index_of_root + p - 1]
for p in positions]
return [t for t in self.all_tones if letter(t) in custom_letters]
def arpeggio_tones(self):
return [
t for t in self.all_tones if letter(t) in self.arpeggio_letters
]
def tones(self):
return [t for t in self.all_tones if letter(t) in self.letters]
def ascending_chromatic_tones(self):
return [
t for t in tones.all_tones
if letter(t) in self.ascending_chromatic_letters
]