def __init__(self, piece):
"""
self.duration = total song duration
self.bars =
bar.parts =
part['instrument_name']
part['notes']
note['pitch']
note['duration'] = total note duration
"""
self.piece = piece
self.prev_root = random.randint(0, 11)
self.harmony_generator = get_harmony_generator()
# TODO choose roots
self.vln_all_notes = self.piece.instruments.vln.all_notes
self.vln_register = self.choose_violin_register()
self.form = form.choose()
self.bars = self.form.bars
self.duration_beats = self.form.duration
self.tempo = random.randint(55, 80)
self.bars[0].tempo = self.tempo
self.duration_minutes = self.duration_beats / float(self.tempo)
for name in self.form.bar_types:
bar_type = self.form.bar_types[name]
bar_type.harmonic_rhythm = harmonic_rhythm.choose(
bar_type.duration)
bar_type.parts[1]['notes'] = [{
'duration': harm_dur,
'pitch': self.choose_harmony()
} for harm_dur in bar_type.harmonic_rhythm]
bar_type.parts[0]['notes'] = self.choose_melody_notes(
bar_type.duration, bar_type.parts[1]['notes'])
for bar in self.bars:
bar.parts = bar.type_obj.parts
def __init__(self, piece):
"""
self.duration = total song duration
self.bars =
bar.parts =
part['instrument_name']
part['notes']
note['pitch']
note['duration'] = total note duration
"""
self.piece = piece
self.prev_root = random.randint(0, 11)
self.harmony_generator = get_harmony_generator()
# TODO choose roots
self.vln_all_notes = self.piece.instruments.vln.all_notes
self.vln_register = self.choose_violin_register()
self.form = form.choose()
self.bars = self.form.bars
self.duration_beats = self.form.duration
self.tempo = random.randint(55, 80)
self.bars[0].tempo = self.tempo
self.duration_minutes = self.duration_beats / float(self.tempo)
for name in self.form.bar_types:
bar_type = self.form.bar_types[name]
bar_type.harmonic_rhythm = harmonic_rhythm.choose(bar_type.duration)
bar_type.parts[1]['notes']= [{
'duration': harm_dur,
'pitch': self.choose_harmony()
} for harm_dur in bar_type.harmonic_rhythm]
bar_type.parts[0]['notes'] = self.choose_melody_notes(bar_type.duration, bar_type.parts[1]['notes'])
for bar in self.bars:
bar.parts = bar.type_obj.parts
def __init__(self, piece, movement):
"""
self.duration = total song duration
self.bars =
bar.parts =
part['instrument_name']
part['notes']
note['pitch']
note['duration'] = total note duration
"""
self.piece = piece
self.movement = movement
self.prev_root = random.randint(0, 11)
self.instruments = self.piece.instruments
self.melody_register = self.instruments.soloists_shared_register()
history = {}
for name in self.instruments.names:
history[name] = []
self.form = form.choose()
print self.form.form_string
self.bars = self.form.bars
self.duration_beats = self.form.duration
if self.movement <= 5:
# Medium
tempo_options = range(56, 66, 2)
elif self.movement in [6, 8, 10, 12]:
# Fast
tempo_options = range(66, 78, 2)
elif self.movement in [7, 9, 11]:
# Slow
tempo_options = range(42, 54, 2)
elif self.movement in [13, 14]:
# Slower
tempo_options = range(36, 42, 2)
elif self.movement > 14:
# Grind to a halt
tempo_options = range(22, 34, 2)
self.tempo = random.choice(tempo_options)
self.bars[0].tempo = self.tempo
self.duration_minutes = self.duration_beats / float(self.tempo)
root = random.randint(0, 12)
self.harmony_history = [[(p * root) % 12 for p in get_chord_type()]]
# for each bar_type pick a transposition pattern
# for each bar of that type, assign the next transposition in the
# pattern
# make a sub register of the soloists' common register for the
# bar_type, that has a buffer to allow the melody to be transposed the
# amount that it will be transposed
trans_patterns = {
'descending': [
[0, -1, -2, -3, -4],
[0, -2, -1, -3, -2],
[0, -1, -3, -5, -7],
[0, -2, -4, -6, -8],
[0, -2, -4, -5, -7],
],
'ascending': [
[0, 1, 2, 3, 4],
[0, 2, 1, 3, 2],
[0, 2, 4, 5, 7],
[0, 2, 3, 5, 7],
[0, 2, 4, 6, 8],
]
}
for name in self.form.bar_types:
bar_type = self.form.bar_types[name]
bar_type.direction = random.choice(trans_patterns.keys())
options = trans_patterns[bar_type.direction]
bar_type.trans_pattern = random.choice(options)
bar_type.trans_pattern = bar_type.trans_pattern[:bar_type.count + 1]
if bar_type.direction == 'descending':
bar_type.furthest_transposition = min(bar_type.trans_pattern)
bar_type.register = self.melody_register[abs(bar_type.furthest_transposition):]
else:
bar_type.furthest_transposition = max(bar_type.trans_pattern)
bar_type.register = self.melody_register[:-bar_type.furthest_transposition]
bar_type_counter = Counter()
for bar in self.bars:
bar_type = self.form.bar_types[bar.type]
i = bar_type_counter[bar.type]
bar.transposition = bar_type.trans_pattern[i]
bar_type_counter[bar.type] += 1
for name in self.form.bar_types:
bar_type = self.form.bar_types[name]
bar_type.harmonic_rhythm = harmonic_rhythm.choose(bar_type.duration)
# Harmony
bar_type.harmony = []
for harm_dur in bar_type.harmonic_rhythm:
chord_type = get_chord_type()
# print 'CHORD TYPE:', chord_type
harmony = animal_play_harmony.choose_next_harmony(
self.harmony_history,
chord_type
)
self.harmony_history.append(harmony)
# print 'HARMONY:', harmony
h = {
'duration': harm_dur,
'pitch': harmony
}
bar_type.harmony.append(h)
# Melody
bar_type.melody = self.choose_melody_notes(
bar_type.duration,
bar_type.harmony,
bar_type
)
# Turn Bar Types into Bars
size = 1
for bar in self.bars:
bar.parts = []
bar.melody = bar.type_obj.melody
bar.harmony = bar.type_obj.harmony
if not self.piece.duet_options:
self.piece.duet_options = [
('ob', 'sax'),
('fl', 'sax'),
('cl', 'sax'),
('ob', 'tpt'),
('sax', 'tpt'),
('cl', 'tpt'),
('fl', 'tpt'),
('fl', 'ob'),
('fl', 'cl'),
('ob', 'cl'),
]
soloist_options = [
'ob',
'cl',
'sax',
'fl',
'tpt',
]
soloist_weights = [
35,
26,
16,
13,
10,
]
soloists = []
if size == 1:
soloist = weighted_choice(soloist_options, soloist_weights)
soloists.append(soloist)
soloist_options.remove(soloist)
elif size == 2:
duet = random.choice(self.piece.duet_options)
self.piece.duet_options.remove(duet)
for soloist in duet:
soloists.append(soloist)
soloist_options.remove(soloist)
# transposition = weighted_choice(
# [-2, -1, 1, 2],
# [10, 12, 8, 12]
# )
transposition = self.add_soloists_melody(soloists, bar)
if transposition != 0:
harmony = []
for note in bar.harmony:
harmony.append({
'pitch': [p + transposition for p in note['pitch']],
'duration': note['duration']
})
bar.harmony = harmony
# Violin
violin_lowest = self.piece.instruments.vln.lowest_note.ps
violin_highest = self.piece.instruments.vln.highest_note.ps
if not history['vln']:
p = random.randint(violin_lowest + 7, violin_highest - 18)
rand_interval = random.randint(-7, 7)
violin_prev_dyad = [p, p + rand_interval]
history['vln'].append(violin_prev_dyad)
violin = []
for chord in bar.harmony:
pitch = next_violin_dyad(
history['vln'][-1],
chord['pitch'],
violin_lowest,
violin_highest
)
violin.append({
'duration': chord['duration'],
'pitch': pitch,
})
history['vln'].append(pitch)
# Vibraphone
vib_lowest = int(self.piece.instruments.vib.lowest_note.ps)
vib_highest = int(self.piece.instruments.vib.highest_note.ps)
if not history['vib']:
prev_vib_chord = random_vibraphone_voicing(
vib_lowest,
vib_highest
)
history['vib'].append(prev_vib_chord)
vibraphone = []
for harm in bar.harmony:
vib_pitches = next_vibraphone_chord(
history['vib'][-1],
harm['pitch'],
vib_lowest,
vib_highest
)
vibraphone.append({
'duration': harm['duration'],
'pitch': vib_pitches,
})
# Bass
bass_lowest = self.piece.instruments.bs.lowest_note.ps
bass_highest = self.piece.instruments.bs.highest_note.ps
if not history['bs']:
bass_prev_pitch = random.randint(bass_lowest, bass_lowest + 18)
history['bs'].append(bass_prev_pitch)
bass = []
for chord in bar.harmony:
pitch = next_bass_note(
history['bs'][-1],
chord['pitch'],
bass_lowest,
bass_highest
)
bass.append({
'duration': chord['duration'],
'pitch': pitch,
})
history['bs'].append(pitch)
bar.parts.extend([
{
'instrument_name': 'vln',
'notes': violin,
},
{
'instrument_name': 'vib',
'notes': vibraphone,
},
{
'instrument_name': 'bs',
'notes': bass,
},
])
if size > 1:
num_accompanists = 2 # random.randint(2, len(soloist_options))
accompanists = random.sample(soloist_options, num_accompanists)
for acc in accompanists:
soloist_options.remove(acc)
lowest = self.piece.instruments.d[acc].lowest_note.ps
highest = self.piece.instruments.d[acc].highest_note.ps
if not history[acc]:
quarter_of_register = (highest - lowest) / 4
lower_limit = int(lowest + quarter_of_register)
higher_limit = int(highest - quarter_of_register)
p = random.randint(lower_limit, higher_limit)
rand_interval = random.randint(-4, 4)
prev_dyad = [p, p + rand_interval]
history[acc].append(prev_dyad)
acc_notes = []
for chord in bar.harmony:
pitch = next_simple_accompaniment_dyad(
history[acc][-1],
chord['pitch'],
lowest, highest
)
acc_notes.append({
'duration': chord['duration'],
'pitch': pitch,
})
history[acc].append(pitch)
bar.parts.append({
'instrument_name': acc,
'notes': acc_notes,
})
# Put rests in instruments that aren't playing in this bar
bar_of_rests = [{
'pitch': 'rest',
'duration': bar.duration,
}]
for inst in soloist_options:
bar.parts.append({
'instrument_name': inst,
'notes': bar_of_rests,
})
size = 1 if size > 1 else 2
