Big Sean released the new track “Switch Up” featuring Common a few days ago and last night the G.O.O.D. Music rapper premiered it live. On the campus of the University of Southern California, for their Springfest concert, B-I-G included the cut in his set adding, “This is a real motherfucking song. It aint no diss song,” quelling speculation that the track is a diss aimed at former lable mate, KiD CuDi. Though not an official single, the song should appear on the “Guap” rappers upcoming album, Hall of Fame.