def find(self):
"""
Returns count, instanecs
"""
count = 0
instances = []
chord_sequences = self.sequences_of(3)
for sequence in chord_sequences:
if sequence[0].half_diminished:
if sequence[1].dominant:
if sequence[2].minor: # It's 0 7 -, check intervals
interval1 = interval(sequence[0].root,
sequence[1].root)
interval2 = interval(sequence[1].root,
sequence[2].root)
if interval1 == P4:
if interval2 == P4:
count += 1
instances.append(sequence)
return count, instances
def find(self):
"""
Returns count, instances
"""
count = 0
instances = []
chord_sequences = self.sequences_of(5)
for sequence in chord_sequences:
# Frist bar is e.g. C-7 C-7/Bb
if sequence[0].minor:
if sequence[0].root == sequence[1].root:
if sequence[1].bass_note:
if interval(sequence[0].root,
sequence[1].bass_note) == m7:
# bars 2&3 are a minor 251 of 5
interval1 = interval(sequence[0].root,
sequence[2].root)
interval2 = interval(sequence[2].root,
sequence[3].root)
interval3 = interval(sequence[3].root,
sequence[4].root)
if sequence[2].half_diminished:
if sequence[3].dominant:
if sequence[4].minor:
if interval1 == M6:
if interval2 == P4:
if interval3 == P4:
count += 1
instances.append(sequence)
return count, instances
def find(self):
"""
Returns count, instanecs
"""
count = 0
instances = []
chord_sequences = self.sequences_of(4)
for sequence in chord_sequences:
if sequence[0].minor:
if sequence[1].minor:
if sequence[
2].dominant: # It's major, minor, minor, dominant, check intervals
if sequence[3].major:
interval1 = interval(sequence[0].root,
sequence[1].root)
interval2 = interval(sequence[1].root,
sequence[2].root)
interval3 = interval(sequence[2].root,
sequence[3].root)
if interval1 == P4:
if interval2 == P4:
if interval3 == P4:
count += 1
instances.append(sequence)
return count, instances
def find(self):
"""
returns count, instances
"""
count = 0
instances = []
chord_sequences = self.sequences_of(4)
for sequence in chord_sequences:
if [c for c in sequence if not c.dominant]:
continue
# Do they move in fourths?
interval1 = interval(sequence[0].root, sequence[1].root)
interval2 = interval(sequence[1].root, sequence[2].root)
interval3 = interval(sequence[2].root, sequence[3].root)
if interval1 == P4 and interval2 == P4 and interval3 == P4:
count += 1
instances.append(sequence)
return count, instances
def find(self):
"""
Returns count, instances
"""
count = 0
instances = []
chord_sequences = self.sequences_of(2)
for sequence in chord_sequences:
if sequence[0].dominant and sequence[1].dominant:
if interval(sequence[0].root, sequence[1].root) == P4:
count += 1
instances.append(sequence)
return count, instances
def test_interval(self):
self.assertEqual('Perfect Fourth', music.interval('C', 'F'))
def test_interval_crosses_octave(self):
self.assertEqual('Major Third', music.interval('G', 'B'))