If you have not heard of +Spotify, then let me put you up on game. Spotify is a commercial music streaming service providing digital rights management. They also carry the tools for artist to have their music played on facebook.
Spotify's Daniel Ek created a free, Facebook-enabled platform that could save the recording industry from falling under. All artists can now list their merchandise within Spotify, for free! Spotify is now free on the Windows Phone. Listen to your music, wherever you are. With Spotify, you have access to a world of music. You can listen to artists and more.