This was a fun assignment for those of us who are music lovers.
I like how both web radio sites pull up music similar to what you want to hear. It's too bad that you can't just listen to the specific song or artist you want, though, on Pandora. LastFM does let you listen to the artist, but you are limited to albums currently on sale. In any case, I consider these to be the 'Novelist' sites for music--if you like this artist/song, maybe you'll like these others as well!