My favorite music artist on www.newgrounds.com is Cheshyre. My favorites are:
Madness6 - http://www.newgrounds.com/audio/listen/33112
Madness6Remix - http://www.newgrounds.com/audio/listen/77998
Madness7 - http://www.newgrounds.com/audio/listen/81367
Insane - http://www.newgrounds.com/audio/listen/93281