Performance art, art rock, experimental rock, heavy metal -- all are styles of music that have been used to explain one of the more hard to explain bands in all of rock, Sleepytime Gorilla Museum. Some critics have compared the band -- which hails from Oakland, California -- to one of the quirkiest bands of all time, Mr. Bungle, and they may have a point (after all, like Bungle, SGM are not opposed to any musical style, and one of their albums was originally released by a label run by an ex-Bungle member, Trey Spruance). Strange costumes, makeup, and instruments that are both ...