Oppa Madonna Style: PSY Joins Material Girl On StageThe viral video star showed the pop icon how to Gangnam Like A Virgin.
Christina Aguilera Unveils Duet With Blake Shelton"He's got a lot of heart," says Christina Aguilera of her "Voice" cohort (and duet partner) Blake Shelton. Hear a full song preview.
Carrie Underwood Duets With Aerosmith On Their New Album 'Music From Another Dimension!'The two "American Idol" alums trade verses on "Can't Stop Loving You," which appears on the veteran rock band's brand new album.