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.

See cute photos of the Jonas Brothers through the years.

“At the end of the year, we were nominated for a Best New Artist Grammy,”…