Your favorite music startup?

I've been thinking lately about some ideas I have had and would really like to do a startup in the music space. So I'd like to pose a question to the group: what is the music startup you are most excited about currently and why?

I will start the discussion by saying I am really excited about what popcuts is doing. Incentivizing fans to get in on music early is brilliant, and truly benefits the artists as well as the fans who discover them.

Looking forward to your thoughts!