# adding melody to track
for new_note in Voice.midi_score[0]:
if isinstance(new_note.pitch, int):
MyMIDI.addNote(track, channel, *new_note, 100)
strum_ending = random.choice((True, True, True, False))
print(f"Strum ending: {strum_ending}")
if strum_ending:
time_shift = 0
for voice_index, part in enumerate(Voice.midi_score[2:], 2):
time_shift += 90
old_midi_obj = Voice.midi_score[voice_index][-2]
new_midi_obj = Voice.Note(
old_midi_obj.pitch,
old_midi_obj.time + time_shift,
old_midi_obj.duration,
)
Voice.midi_score[voice_index][-2] = new_midi_obj
# adding chords to track
for voice_index, part in enumerate(Voice.midi_score[1:]):
track += 1
channel += 1
volume = Voice.voice_volumes[voice_index]
for new_note in part:
if isinstance(new_note.pitch, int):
MyMIDI.addNote(track, channel, *new_note, volume)
"""
3/4 time sig feels slower at same tempo because
beats are in groups of 3 instead of 2
def add_midi_section(self,
melody_section,
chord_start_index,
note_start_indices,
index_shift=None):
"""Add midi notes to the pitch sequence using scale degrees"""
object_index = 0
melodic_minor = False
add_rest = False
melody_section_iter = iter(melody_section)
next_scale_group = next(melody_section_iter, None)
for chord_index, current_scale_group in enumerate(
melody_section, chord_start_index):
next_scale_group = next(melody_section_iter, None)
current_chord_name = Voice.chord_sequence[chord_index].chord_name
if self.mode == "ionian" and current_chord_name in Chord.major_mode_alterations:
note_alterations = Chord.major_mode_alterations[
current_chord_name]
elif self.mode == "aeolian" and current_chord_name in Chord.minor_mode_alterations:
note_alterations = Chord.minor_mode_alterations[
current_chord_name]
else:
note_alterations = {}
if self.mode == "aeolian" and current_chord_name in self.primary_dominants:
if melodic_minor:
note_alterations[5] = 1
else:
# catch raised notes inbetween 2 chords
next_chord_name = Voice.chord_sequence[chord_index +
1].chord_name
if next_chord_name in self.primary_dominants:
affected_scale_group = current_scale_group + next_scale_group
else:
affected_scale_group = current_scale_group
scale_group_str = "".join(
str(scale_degree)
for scale_degree in affected_scale_group)
if any(str_combo in scale_group_str
for str_combo in ("56", "65", "-1-2", "-2-1")):
melodic_minor = True
note_alterations[5] = 1
print("Melodic minor!")
for embellish_index, scale_degree in enumerate(
current_scale_group,
note_start_indices.get(chord_index, 0)):
embellish_duration = self.finalized_rhythms[chord_index][
embellish_index]
# account for negative scale degrees
note_offset = note_alterations.get(scale_degree % 7, 0)
embellish_fraction = Fraction(numerator=embellish_duration,
denominator=self.unit_length)
raw_note_duration = int(Voice.max_note_duration *
embellish_fraction)
# integers required for midi output
if raw_note_duration > 960 and self.rhythm_symbols[
chord_index] >= 0 and self.break_notes:
fixed_note_duration = 960
add_rest = True
extra_duration = raw_note_duration - 960
else:
fixed_note_duration = raw_note_duration
midi_pitch = self.melody_range[scale_degree + 3] + note_offset
if chord_index == 7 and embellish_index == 0 and self.rhythm_symbols[
6] == -1:
self.midi_notes.append(
Voice.Note("Rest", self.current_time,
fixed_note_duration))
# needed all numbers in unnested sequence for validation
self.unnested_scale_degrees.pop(object_index + index_shift)
else:
self.midi_notes.append(
Voice.Note(midi_pitch, self.current_time,
fixed_note_duration))
if add_rest:
self.midi_notes.append(
Voice.Note("Rest", self.current_time + 960,
extra_duration))
self.current_time += raw_note_duration
add_rest = False
object_index += 1
return object_index
def make_accompanyment(self):
"""Rhythmically embellish chord progression"""
if Voice.pickup:
for _ in range(4):
Voice.midi_score.append(
[Voice.Note("Rest", 0, Voice.pickup_duration)])
Voice.chorale_scale_degrees.append([None])
else:
for _ in range(4):
Voice.midi_score.append([])
Voice.chorale_scale_degrees.append([])
chord_accompaniments = {
(2, 2): [
((960, 960), ({0, 1, 2, 3}, {})),
((960 * 3 // 2, 480), ({0, 1, 2, 3}, {})),
((480, 480, 480, 480), ({0, 1, 2, 3}, {}, {0, 1, 2, 3}, {})),
(
(480, 240, 480, 240, 480),
({0, 1, 2, 3}, {}, {0, 1, 2, 3}, {}, {0, 1, 2, 3}),
),
],
(2, 3): [
((960, 960), ({0, 1, 2, 3}, {})),
((960 * 10 // 6, 960 * 2 // 6), ({0, 1, 2, 3}, {})),
(
(960 * 2 // 3, 320, 960 * 2 // 3, 320),
({0, 1, 2, 3}, {}, {0, 1, 2, 3}, {}),
),
],
(3, 2): [
((960, 960 * 2), ({0, 1, 2, 3}, {})),
((960 * 2, 960), ({0, 1, 2, 3}, {})),
(
(480, 480, 480, 480, 480, 480),
({0, 1, 2, 3}, {}, {0, 1, 2, 3}, {}, {0, 1, 2, 3}, {}),
),
],
(4, 2): [
((960, 960), ({0, 1, 2, 3}, {})),
((960 * 3 // 2, 480), ({0, 1, 2, 3}, {})),
((480, 480, 480, 480), ({0, 1, 2, 3}, {}, {0, 1, 2, 3}, {})),
(
(480, 240, 480, 240, 480),
({0, 1, 2, 3}, {}, {0, 1, 2, 3}, {}, {0, 1, 2, 3}),
),
((960 * 2, 960 * 2), ({0, 1, 2, 3}, {})),
],
(4, 3): [((960, 960), ({0, 1, 2, 3}, {})),
((960 * 10 // 6, 960 * 2 // 6), ({0, 1, 2, 3}, {})),
(
(960 * 2 // 3, 320, 960 * 2 // 3, 320),
({0, 1, 2, 3}, {}, {0, 1, 2, 3}, {}),
), ((960 * 2, 960 * 2), ({0, 1, 2, 3}, {}))]
}
chord_accompaniment = chord_accompaniments[Voice.time_sig]
if Voice.time_sig[0] == 4:
if Voice.chord_acceleration:
chord_accompaniment.pop()
note_durations, voices_used = random.choice(chord_accompaniment)
chord_units_used = sum(note_durations) // Voice.max_note_duration
if chord_units_used == 0:
chord_units_used = 1
print(f"Chord units used: {chord_units_used}")
all_note_durations = []
all_voices_used = []
note_index = 0
for _ in range(chord_units_used):
all_note_durations.append([])
all_voices_used.append([])
while sum(all_note_durations[-1]) < Voice.max_note_duration:
all_note_durations[-1].append(note_durations[note_index])
all_voices_used[-1].append(voices_used[note_index])
note_index += 1
print(f"All note durations: {all_note_durations}")
print(f"All voices used: {all_voices_used}")
num_chords = len(Voice.chord_sequence)
self.current_time = Voice.pickup_duration
self.add_chord_section(0, -2, all_note_durations, all_voices_used,
chord_units_used)
end_note_durations = ((Voice.max_note_duration, ),
(Voice.max_note_duration, ))
end_voices_used = [[{0, 1, 2, 3}], [{}]]
if self.repeat_ending:
self.add_chord_section(-2 % num_chords, num_chords,
all_note_durations, all_voices_used,
chord_units_used)
self.add_chord_section(-4 % num_chords, -2, all_note_durations,
all_voices_used, chord_units_used)
self.add_chord_section(-2 % num_chords, num_chords, end_note_durations,
end_voices_used, 2)
