Labels
======

Major				= 0...11
Minor				= 12...23
Modulation/Unknown 	= -1

A	A#	B	C	C#	D	D#	E	F	F#	G	G#
0	1	2	3	4	5	6	7	8	9	10	11

a	a#	b	c	c#	d	d#	e	f	f#	g	g#
12	13	14	15	16	17	18	19	20	21	22	23

Audio
=====
http://marsyas.info/downloads/datasets.html
