Online music service GrooveShark offers mobile apps for Android and jailbroken iOS devices. But there’s no official app for Windows Phone 7 yet. There is, however an unofficial app called MusicShark.
MusicShark taps into the GrooveShark service and lets you search for artists or songs to stream to your phone. You can also create playlists by queuing up songs you want to play.
There’s currently no way to login to your GrooveShark account from the app — which doesn’t actually mention that it’s grabbing music from GrooveShark. So umm, you might want to grab it from the Windows Phone Marketplace while you can.
via WP Central