Usher Rehearses for Grammys with Justin Bieber and Jaden Smith

The student became the teacher during rehearsals for Usher and his protégé Justin Bieber’s Grammy Awards performance at L.A.’s Staples Center. The “OMG” hitmaker busted a move and the “Baby” singer cradled a guitar, while Jaden Smith joined his fellow teen star for their “Never Say Never” collabo. Catch the trio live in action when they hit the stage tomorrow.