OCEAN WAVES: Frank Ocean is joined by John Mayer on Saturday Night Live for a performance of “Pyramids,” from his Def Jam/IDJ album, Channel Orange, which has climbed to #5 on the iTunes chart. Earlier, Ocean sang his hit, “Thinkin Bout You.” Watch how, during Mayer’s guitar solo, he casually strolls to play a video game at the arcade set up as part of the stage set. Very cool. SNL also helped boost PSY's ubiquitous "Gangnam Style" to #1 on the iTunes singles chart following his surprise appearance on the show. (9/17a)