def test_relative_minor(self):
known = {'C': 'a', 'E': 'c#', 'B': 'g#', 'G': 'e', 'F': 'd'}
for k in known.keys():
self.assertEqual(
known[k], keys.relative_minor(k),
'The minor of %s is not %s, expecting %s' %
(k, keys.relative_minor(k), known[k]))
def test_relative_minor(self):
known = {"C": "a", "E": "c#", "B": "g#", "G": "e", "F": "d"}
for k in known:
self.assertEqual(
known[k],
keys.relative_minor(k),
"The minor of %s is not %s, expecting %s" %
(k, keys.relative_minor(k), known[k]),
)
def test_relative_minor(self):
known = {
'C': 'a',
'E': 'c#',
'B': 'g#',
'G': 'e',
'F': 'd'
}
for k in known.keys():
self.assertEqual(known[k], keys.relative_minor(k),
'The minor of %s is not %s, expecting %s' % (k,
keys.relative_minor(k), known[k]))
def reharmonize(chords, scores, bars, key, mode):
if mode == 'minor':
new_key = Keys.relative_minor(key)
for i in range(0, len(chords)):
if (chords[i] == 'bbbbbI'): continue
if random.random() > 0.2:
subs = Progressions.substitute([chords[i]], 0)
for j in range(0, 5):
sub = random.choice(subs)
if not (sub.endswith('dim')) and not (
sub.endswith('dim7')) and score(sub, bars[i], new_key):
if i == 0:
if sub == chords[i + 1]: continue
if i == len(chords) - 1:
if sub != chords[i - 1]: continue
if sub != chords[i - 1] and sub != chords[i + 1]:
chords[i] = sub
break
def transpose_to_relative_minor(track, original_key, harmonic):
transposed_track = copy.deepcopy(track)
if original_key in keys.major_keys:
old_scale = keys.get_notes(original_key)
new_key = keys.relative_minor(original_key)
new_scale = keys.get_notes(new_key)
if harmonic:
new_scale[6] = notes.augment(new_scale[6])
new_scale[6] = notes.reduce_accidentals(new_scale[6])
input_notes = transposed_track.get_notes()
for bar in input_notes:
#Check if the nc contained in the bar/"note" is a pause, then do nothing
nc = bar[-1]
if nc is None:
continue
#Otherwise
else:
#For every actual note in the note containers (important if there is a chord)
for note in nc:
#old_note = copy.deepcopy(note)
if note.name in old_scale:
index = old_scale.index(note.name)
note.name = new_scale[index]
else:
note.transpose("b3")
note.name = notes.reduce_accidentals(note.name)
# Fix octaves
if note.name[0] == 'A' or note.name[0] == 'B':
note.octave_down()
else:
print("input key is not major key")
return transposed_track
def get_relative(key):
"""Get the relative key of key"""
return keys.relative_minor(key) if key[0].isupper() else keys.relative_major(key)