Not only have the Jonas Brothers been nominated for a Grammy -- they'll be singing at the Feb. 8 ceremony. The Bros -- who are up against Adele, Duffy, Lady Antebellum, and Jazmine Sullivan as Best New Artists -- will belt out one tune, a source revealed to E! Online.

"At the end of the year, we were nominated for a Best New Artist Grammy," Kevin, Nick and Joe wrote recently on their My Space page. "We don't even know what to say about this honor. It is a complete shock and thrill all at the same time."

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On Wednesday, it was announced that nominees Kenny Chesney, Coldplay, Lil Wayne and Katy Perry will also perform. The show airs Feb. 8 on CBS.