E mais artistas foram adicionados no alinhamento das actuações dos Grammys que decorrerão a 13 de Fevereiro. Além de Lady GaGa, Arcade Fire, Cee-Lo Green, Eminem, Katy Perry e Miranda Lambert, juntam-se agora Usher, Bruno Mars, Justin Bieber, Janelle Monáe, Jaden Smith, Lady Antebellum e Muse.

And more artists have been added to the performers' list at the Grammys that are held on February 13th! So besides Lady GaGa, Arcade Fire, Cee-Lo Green, Eminem, Katy Perry and Miranda Lambert. we now have: Usher, Bruno Mars, Jaden Smith, Janelle Monáe, Justin Bieber, Lady Antebellum and Muse!