A top secret recording session took place on Tuesday night involving a supergroup of sorts covering one of the most recognized songs in rock history: Led Zeppelin's classic "Stairway to Heaven." The players? Soul queen Mary J. Blige on vocals, guitar god Steve Vai and his pop protégé Orianthi on rhythm and lead guitars, respectively, Travis Barker on drums and "American Idol" judge Randy Jackson on bass, with producer Ron Fair (Christina Aguilera, Pussycat Dolls) handling piano, the arrangement and all-star recruitment. The track's destination: Blige’s 10th studio album, due out later this year.