Bun B and Rap-A-Lot Records are looking for the nation's next rap superstar and are partnering with Zune - is it you? From now until July, you'll be able to download an instrumental Bun B track in Zune Marketplace, record your own rap over the track, and submit it to Rap-A-Lot Records. Get details in the media alert , or go right to the contest rules . Good luck!

Check out Houston hip hop star Bun B , who's On the Road with Zune this month . Get tour dates and show info at Zune.net (Bun B and his Zune bus in Birmingham, Alabama; Credit: Photo by Cory Mo.) Bun even has a Zune Card , too: