I love Pandora! http://www.pandora.com/
I usually listen to it on the ipad. Since I am on the computer, I turned it on. Wow! They have the lyrics for all the songs here! Yay! That makes me so happy! I also like how you can like or dislike the songs so the playlists adapt to your taste! I definitely suggest checking it out! Especially since it is FREE! There are occasional advertisements, but much less than the FM radio stations.