MTV RADIO NEWS BRIEF: USHER, KERI HILSON, BRUNO MARS [AUDIO]

USHER TO JOIN THE PEAS AT THE SUPER BOWL Good news! In addition to the Black Eyed Peas taking the stage for the halftime show at this Sunday’s Super Bowl, the Associated Press reports that Usher and former Guns N’ Roses guitarist Slash are expected to perform too! Be sure to tune in to see the Steelers take on the Packers on Sunday at 6:30 PM Eastern on Fox.   KERI HILSON GOES GOLD We’ve just learned Keri Hilson’s smash hit, “Pretty Girl Rock,” has officially reached gold status and has been named the number one tune on