GrooveShark
If you enjoyed the music selection on Pandora then you’ll probably like GrooveShark even more. It’s simple. Any song you want, any artist you can think up. Just type it into their search engine and they’ll find it for you and play it for free.
GrooveShark was founded in 2006 by Sam Taratino and Josh Greenberg and it’s based out of Gainesville Florida, U.S.A. It is a service of Escape Media Group and according to Wikipedia (01/04/10) they are streaming 50 to 60 million songs a month and growing at a rate of 2-3% a day.
Give it a try today, see if you can find your favorite music on http://listen.grooveshark.com/