(LOS ANGELES) -- Justin Bieber, Usher, B.o.B., Bruno Mars and Lady Antebellum have just been added to the lineup of the 53rd annual Grammy Awards. Justin and his mentor Usher, both nominees this year, will do a special performance with Justin's buddy and duet partner Jaden Smith. Duet partners B.o.B. and Bruno will perform together, of course, but Janelle Monae, who's also nominated, will join them onstage. In addition, Lady Antebellum will also take the stage, and so will British alternative rockers Muse.
Previously, Eminem, Katy Perry, Cee-Lo Green, Arcade Fire and Miranda Lambert had been announced as performers for the event, which takes place Feb. 13 and will air at 8 p.m. ET/PT on CBS.
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