Not only did LL Cool J host the Grammy Awards last night; he closed the show out with a performance of his new single "Whaddup" with Travis Barker, the legendary Chuck D, Rage Against The Machine guitarist Tom Morello, and DJ Z-Trip.
Catch the performance after the jump, and listen to the studio recording of "Whaddup" below. Authentic is set to hit stores May 17th.
Purchase (iTunes)
