def generate_blues_scale(key="C"): """Returns an ordered list of the notes of the blues scale in this key. \ For example: if the key is set to 'C', this function will return \ `['C', 'D#', 'F', 'F#', 'G', 'A#']`. \ This function will raise an !NoteFormatError if the key isn't recognised""" if not (notes.is_valid_note(key)): raise NoteFormatError, "Unrecognised format for key '%s'" % key result = [] fifth_index = notes.fifths.index(key[0]) result.append(intervals.unison(key)) result.append(notes.diminish(intervals.third(key, key))) result.append(intervals.third(key, key)) result.append(intervals.fourth(key, key)) result.append(notes.diminish(intervals.fifth(key, key))) result.append(intervals.fifth(key, key)) result.append(notes.diminish(intervals.seventh(key, key))) # Remove redundant #'s and b's from the result result = map(notes.remove_redundant_accidentals, result) tonic = result.index(notes.remove_redundant_accidentals(key)) result = result[tonic:] + result[:tonic] return result
def triad(note, key): """Return the triad on note in key as a list. Examples: >>> triad('E', 'C') ['E', 'G', 'B'] >>> triad('E', 'B') ['E', 'G#', 'B'] """ return [note, intervals.third(note, key), intervals.fifth(note, key)]
def get_note_pattern(pattern, key): if pattern[0] == 1 : note = intervals.unison(key) elif pattern[0] == 2 : note = intervals.second(key, key) elif pattern[0] == 3 : note = intervals.third(key, key) elif pattern[0] == 4 : note = intervals.fourth(key, key) elif pattern[0] == 5 : note = intervals.fifth(key, key) elif pattern[0] == 6 : note = intervals.sixth(key, key) elif pattern[0] == 7 : note = intervals.seventh(key, key) if pattern[3] == "bemol": note = notes.diminish(note) elif pattern[3] == "diese" : note = notes.augment(note) return note
''' Created on Jan 6, 2017 @author: stephenkoh ''' import mingus.core.intervals as intervals key = str(input('Please enter a key: ')) note = str(input('Please enter a note: ')) third = intervals.third(note, key) fifth = intervals.fifth(note, key) print(note, third, fifth)