Glossary

Names used for arguments and values throughout the library.

Name	Type	Meaning	Example
midi_num	int	a MIDI note number, 0 to 127; 60 is middle C	60
note	str	a note name with an octave, using sharps	"C4"
note_name	str	a note name without its octave	"C"
octave	int	the octave of a note; C4 starts octave 4	4
pitch_class	int	a note name as a number, 0 (C) to 11 (B)	0
midi_nums	list[int]	the notes of one chord	[60, 48]
notes	list[str]	the notes of one chord	["C4", "C3"]
midi_nums_str	str	midi_nums joined by -; chords joined by _	"60-48", "60-48_62-52"
note_str	str	notes joined by -; chords joined by _	"C4-C3", "C4-C3_D4-E3"
midi_nums_list	list[list[int]]	the notes of several chords	[[60, 48], [62, 52]]
notes_list	list[list[str]]	the notes of several chords	[["C4", "C3"], ["D4", "E3"]]
chord_type	str	the name of a chord type; "" when none fits	"major chord"
type_num	int	a chord type's position in TYPE_TEMPLATES	63
type_id	int	same as type_num; called typeId on chords	63
type_num_str	str	type_nums joined by _	"63_59"
chord_types	list[str]	the chord types of several chords	["major chord", "minor chord"]
duration	str	a chord's length in Tone.js time notation	"1m"
durations	list[str]	the durations of several chords	["1m", "2n", "2n"]
duration_str	str	durations joined by _	"1m_2n_2n"
beats	list[float]	chord lengths in quarter-note beats	[4, 2, 2]
template	list[int]	which of the 12 pitch classes, starting at C, a chord contains	[1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0]
template_str	str	a template as a string	"100010010000"
rotation	list[int]	a template transposed by some number of semitones	[0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0]
freq	float	a frequency in hertz	440.0
voicing	list[int]	a chord's notes in a particular register, as MIDI numbers	[48, 64, 67]
chord	Chord	a set of unique notes; see Chords
progression	Progression	a sequence of chords with durations; see Progressions