def sevenths(key): """Returns all the sevenths chords in key in a list""" if _sevenths_cache.has_key(key): return _sevenths_cache[key] res = map(lambda x: seventh(x, key), diatonic.get_notes(key)) _sevenths_cache[key] = res return res
def sevenths(key):
"""Returns all the sevenths chords in key in a list"""
if _sevenths_cache.has_key(key):
return _sevenths_cache[key]
res = map(lambda x: seventh(x, key), diatonic.get_notes(key))
_sevenths_cache[key] = res
return res
def triads(key): """Returns all the triads in key. Implemented using a cache.""" if _triads_cache.has_key(key): return _triads_cache[key] res = map(lambda x: triad(x, key), diatonic.get_notes(key)) _triads_cache[key] = res return res
def diatonic(note):
"""Returns the diatonic scale starting on note.
Example:
{{{
>>> diatonic("C")
["C", "D", "E", "F", "G", "A", "B"]
}}}"""
return get_notes(note)
def triads(key):
"""Returns all the triads in key. Implemented using a cache."""
if _triads_cache.has_key(key):
return _triads_cache[key]
res = map(lambda x: triad(x, key), diatonic.get_notes(key))
_triads_cache[key] = res
return res
def diatonic(note):
"""Returns the diatonic scale starting on note.
Example:
{{{
>>> diatonic(\"C\")
[\"C\", \"D\", \"E\", \"F\", \"G\", \"A\", \"B\"]
}}}"""
return get_notes(note)
def natural_minor(note):
"""Returns the natural minor scale starting on note.
Example:
{{{
>>> natural_minor("A")
["A", "B", "C", "D", "E", "F", "G"]
}}}"""
s = get_notes(notes.to_major(note))
return s[5:] + s[:5]
def diatonic(note):
"""Returns the diatonic scale starting on note.
Example:
{{{
>>> diatonic(\"C\")
[\"C\", \"D\", \"E\", \"F\", \"G\", \"A\", \"B\"]
}}}"""
return get_notes(note)
def natural_minor(note):
"""Returns the natural minor scale starting on note.
Example:
{{{
>>> natural_minor(\"A\")
[\"A\", \"B\", \"C\", \"D\", \"E\", \"F\", \"G\"]
}}}"""
s = get_notes(notes.to_major(note))
return s[5:] + s[:5]
def natural_minor(note):
"""Returns the natural minor scale starting on note.
Example:
{{{
>>> natural_minor(\"A\")
[\"A\", \"B\", \"C\", \"D\", \"E\", \"F\", \"G\"]
}}}"""
s = get_notes(notes.to_major(note))
return s[5:] + s[:5]
def get_interval(note, interval, key = 'C'): """Gets the note an interval (in half notes) away from the given note. \ This will produce mostly theoretical sound results, but you should \ use the minor and major functions to work around the corner cases.""" intervals = map(lambda x: (notes.note_to_int(key) + x) % 12,\ [0, 2, 4, 5, 7, 9, 11]) key_notes = diatonic.get_notes(key) for x in key_notes: if x[0] == note[0]: result = (intervals[key_notes.index(x)] + interval) % 12 if result in intervals: return key_notes[intervals.index(result)] + note[1:] else: return notes.diminish(key_notes[intervals.index((result + 1) % 12)] + note[1:])
def get_interval(note, interval, key='C'):
"""Gets the note an interval (in half notes) away from the given note. This \
will produce mostly theoretical sound results, but you should use the minor \
and major functions to work around the corner cases."""
intervals = map(lambda x: (notes.note_to_int(key) + x) % 12, [
0,
2,
4,
5,
7,
9,
11,
])
key_notes = diatonic.get_notes(key)
for x in key_notes:
if x[0] == note[0]:
result = (intervals[key_notes.index(x)] + interval) % 12
if result in intervals:
return key_notes[intervals.index(result)] + note[1:]
else:
return notes.diminish(key_notes[intervals.index((result + 1) % 12)] +
note[1:])
