def test_degree_in_key(self):
"""
Ensure that it plays in G major.
"""
from sebastian.core.transforms import degree_in_key
from sebastian.core.notes import Key, major_scale
h1 = self.make_horizontal_sequence()
keyed = h1 | degree_in_key(Key("G", major_scale))
self.assertEqual(keyed._elements, [
{
'degree': 1,
'pitch': -1
},
{
'degree': 2,
'pitch': 1
},
{
'degree': 3,
'pitch': 3
},
{
'degree': 1,
'pitch': -1
},
])
def test_degree_in_key(self):
"""
Ensure that it plays in G major.
"""
from sebastian.core.transforms import degree_in_key
from sebastian.core.notes import Key, major_scale
h1 = self.make_horizontal_sequence()
keyed = h1 | degree_in_key(Key("G", major_scale))
self.assertEqual(keyed._elements, [
{'degree': 1, 'pitch': -1},
{'degree': 2, 'pitch': 1},
{'degree': 3, 'pitch': 3},
{'degree': 1, 'pitch': -1},
])
def test_play_notes_in_midi_pitches(self):
"""
Ensure that it plays in G major.
"""
from sebastian.core.transforms import degree_in_key, midi_pitch, add
from sebastian.core.notes import Key, major_scale
from sebastian.core import MIDI_PITCH, DURATION_64
h1 = self.make_horizontal_sequence()
keyed = h1 | degree_in_key(Key("G", major_scale))
positioned = keyed | add({'octave': 4, DURATION_64: 8})
pitched = positioned | midi_pitch()
self.assertEqual(pitched._elements, [
{'degree': 1, 'pitch': -1, DURATION_64: 8, MIDI_PITCH: 55, 'octave': 4},
{'degree': 2, 'pitch': 1, DURATION_64: 8, MIDI_PITCH: 57, 'octave': 4},
{'degree': 3, 'pitch': 3, DURATION_64: 8, MIDI_PITCH: 59, 'octave': 4},
{'degree': 1, 'pitch': -1, DURATION_64: 8, MIDI_PITCH: 55, 'octave': 4},
])
def test_play_notes_in_midi_pitches(self):
"""
Ensure that it plays in G major.
"""
from sebastian.core.transforms import degree_in_key, midi_pitch, add
from sebastian.core.notes import Key, major_scale
from sebastian.core import MIDI_PITCH, DURATION_64
h1 = self.make_horizontal_sequence()
keyed = h1 | degree_in_key(Key("G", major_scale))
positioned = keyed | add({'octave': 4, DURATION_64: 8})
pitched = positioned | midi_pitch()
self.assertEqual(pitched._elements, [
{
'degree': 1,
'pitch': -1,
DURATION_64: 8,
MIDI_PITCH: 55,
'octave': 4
},
{
'degree': 2,
'pitch': 1,
DURATION_64: 8,
MIDI_PITCH: 57,
'octave': 4
},
{
'degree': 3,
'pitch': 3,
DURATION_64: 8,
MIDI_PITCH: 59,
'octave': 4
},
{
'degree': 1,
'pitch': -1,
DURATION_64: 8,
MIDI_PITCH: 55,
'octave': 4
},
])
"""
The main title theme to HBO's Game of Thrones by Ramin Djawadi
"""
from sebastian.core import Point, HSeq, OSequence
from sebastian.core.transforms import midi_pitch, degree_in_key, add
from sebastian.core.notes import Key, major_scale, minor_scale
from sebastian.midi import write_midi
C_Major = Key("C", major_scale)
C_minor = Key("C", minor_scale)
motive_degrees = HSeq(Point(degree=n) for n in [5, 1, 3, 4])
motive_rhythm_1 = HSeq(Point(duration_64=n) for n in [16, 16, 8, 8])
motive_rhythm_2 = HSeq(Point(duration_64=n) for n in [48, 48, 8, 8, 32, 32, 8, 8])
motive_1 = motive_degrees & motive_rhythm_1
motive_2 = (motive_degrees * 2) & motive_rhythm_2
# add key and octave
seq1 = (motive_1 * 4) | add({"octave": 5}) | degree_in_key(C_minor)
seq2 = (motive_1 * 4) | add({"octave": 5}) | degree_in_key(C_Major)
seq3 = motive_2 | add({"octave": 4}) | degree_in_key(C_minor)
seq = (seq1 + seq2 + seq3) | midi_pitch() | OSequence
write_midi.write("game_of_thrones.mid", [seq], instruments=[49], tempo=350000)
# merge
seq5 = seq3 // seq4
# play MIDI
player.play([seq5])
# write to MIDI
write_midi.write("seq5.mid", [seq5])
# contruct a horizontal sequence of scale degrees
seq6 = HSeq(Point(degree=degree) for degree in [1, 2, 3, 2, 1])
# put that sequence into C major, octave 4 quavers
C_MAJOR = Key("C", major_scale)
seq7 = seq6 | add({"octave": 4, DURATION_64: 8}) | degree_in_key(C_MAJOR)
# convert to MIDI pitch and play
player.play([OSequence(seq7 | midi_pitch())])
# sequence of first four degree of a scale
seq8 = HSeq(Point(degree=n) for n in [1, 2, 3, 4])
# add duration and octave
seq8 = seq8 | add({DURATION_64: 16, "octave": 5})
# put into C major
seq8 = seq8 | degree_in_key(C_MAJOR)
# annotate with lilypond
seq8 = seq8 | lilypond()
# merge
seq5 = seq3 // seq4
# play MIDI
player.play([seq5])
# write to MIDI
write_midi.write("seq5.mid", [seq5])
# contruct a horizontal sequence of scale degrees
seq6 = HSeq(Point(degree=degree) for degree in [1, 2, 3, 2, 1])
# put that sequence into C major, octave 4 quavers
C_MAJOR = Key("C", major_scale)
seq7 = seq6 | add({"octave": 4, DURATION_64: 8}) | degree_in_key(C_MAJOR)
# convert to MIDI pitch and play
player.play([OSequence(seq7 | midi_pitch())])
# sequence of first four degree of a scale
seq8 = HSeq(Point(degree=n) for n in [1, 2, 3, 4])
# add duration and octave
seq8 = seq8 | add({DURATION_64: 16, "octave": 5})
# put into C major
seq8 = seq8 | degree_in_key(C_MAJOR)
# annotate with lilypond
"""
The main title theme to HBO's Game of Thrones by Ramin Djawadi
"""
from sebastian.core import Point, HSeq, OSequence
from sebastian.core.transforms import midi_pitch, degree_in_key, add
from sebastian.core.notes import Key, major_scale, minor_scale
from sebastian.midi import write_midi
C_Major = Key("C", major_scale)
C_minor = Key("C", minor_scale)
motive_degrees = HSeq(Point(degree=n) for n in [5, 1, 3, 4])
motive_rhythm_1 = HSeq(Point(duration_64=n) for n in [16, 16, 8, 8])
motive_rhythm_2 = HSeq(
Point(duration_64=n) for n in [48, 48, 8, 8, 32, 32, 8, 8])
motive_1 = motive_degrees & motive_rhythm_1
motive_2 = (motive_degrees * 2) & motive_rhythm_2
# add key and octave
seq1 = (motive_1 * 4) | add({"octave": 5}) | degree_in_key(C_minor)
seq2 = (motive_1 * 4) | add({"octave": 5}) | degree_in_key(C_Major)
seq3 = motive_2 | add({"octave": 4}) | degree_in_key(C_minor)
seq = (seq1 + seq2 + seq3) | midi_pitch() | OSequence
write_midi.write("game_of_thrones.mid", [seq], instruments=[49], tempo=350000)
# add
s5 = s4 | add({"octave": 4, DURATION_64: 8})
assert list(s5) == [
{'degree': 1, DURATION_64: 8, 'octave': 4},
{'degree': 2, DURATION_64: 8, 'octave': 4},
{'degree': 3, DURATION_64: 8, 'octave': 4},
{'degree': 2, DURATION_64: 8, 'octave': 4},
{'degree': 1, DURATION_64: 8, 'octave': 4}
]
# degree_in_key
s6 = s5 | degree_in_key(Key("C", major_scale))
assert list(s6) == [
{'degree': 1, DURATION_64: 8, 'octave': 4, 'pitch': -2},
{'degree': 2, DURATION_64: 8, 'octave': 4, 'pitch': 0},
{'degree': 3, DURATION_64: 8, 'octave': 4, 'pitch': 2},
{'degree': 2, DURATION_64: 8, 'octave': 4, 'pitch': 0},
{'degree': 1, DURATION_64: 8, 'octave': 4, 'pitch': -2}
]
# midi_pitch
s7 = s6 | midi_pitch()
assert list(s7) == [
{'degree': 1, MIDI_PITCH: 48, DURATION_64: 8, 'octave': 4, 'pitch': -2},
def write(filename, seq):
with open(filename, "w") as f:
f.write("{ ")
for point in seq:
f.write(point["lilypond"])
f.write(" ")
f.write("}\n")
if __name__ == "__main__":
from sebastian.core import DURATION_64
from sebastian.core import HSeq, Point
from sebastian.core.notes import Key, major_scale
from sebastian.core.transforms import degree_in_key, add, lilypond
seq = HSeq(Point(degree=n) for n in [1, 2, 3, 4])
seq = seq | add({DURATION_64: 16, "octave": 5})
C_major = Key("C", major_scale)
seq = seq | degree_in_key(C_major) | lilypond()
write("test.ly", seq)
