The 53rd Annual Grammy Awards just got bigger. With Eminem, Cee Lo Green and Lady Gaga, already confirmed as performers for the event last week, the show will also feature a new batch of musical performances from Usher and Justin Bieber featuring Jaden Smith, B.o.B, Bruno Mars, Janelle Monae, Muse and Lady Antebellum.

Though details are being kept under wraps regarding Usher and Bieber's joint performance, Jaden Smith will most likely bust a move or contribute a rap verse as he has done at past Bieber concerts. Usher and his protégé are both up for two awards, with Beibs nominated for Best New Artist and Best Pop Vocal Album and Ursh honored with Best Male R&B Vocal Performance and Best Contemporary R&B Album.

Bruno Mars, who is nominated for a whopping seven awards including Record of the Year and Song of the Year, will also grace the stage, while his 'Nothin' On You' collaborator B.o.B, who was bestowed with five nods, will also perform. Monae, honored with two awards including Best Urban/Alternative Performance and Best Contemporary R&B Album, will heat up the broadcast with a set including cuts from her full-length debut 'The ArchAndroid.'

The new performers also join Katy Perry, Miranda Lambert and Arcade Fire on the performance slate. The ceremony will bebroadcast live from the Staples Center in Los Angeles on Feb. 13 at 8PM on CBS.

Watch B.o.B's 'Nothin' on You' feat. Bruno Mars

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