Last night was the first night of Rock The Bells 2011 at the San Manuel Amphitheater in San Benardino, CA. Artists such as Nas, Mobb Deep, Slaughterhouse, BlackStar, and more took to the stage as part of the three show festival. During his set, Nas surprised fans by bringing Ron Artest onstage. Watch the performance after the jump.

@Julie1205 x @gametimegirl