My mp3 collection is (as determined by iTunes... I disagree on some designations):

Type		Song Count	Percentage
Alternative	222		13%
Blues		27		2%
Classical	85		5%
Country		4		0%
Easy Listening	16		1%
Folk		579		34%
Jazz		14		1%
Live		57		3%
Pop		87		5%
R&B		40		2%
Rock		294		17%
Soundtrack	228		13%
World		48		3%
Totals		1701		100%