Ariana Grande and Kelly Clarkson are used to facing off on NBC's The Voice. But recently, both divas took part in a friendly competition against fellow The Voice judges Blake Shelton and John Legend during the premiere episode of Jimmy Fallon's new variety game show That's My Jam. The show is inspired by some of the fun games Fallon plays with his guests on The Tonight Show. In a sneak peak of That's My Jam, Grande and Clarkson are seen going mic-to-mic in a Mixtape Medley showdown, in which they sing a medley of classic hits we all know and love. The catch? The songs are given to them at random, so they have no idea what's coming next and must keep up with the lyrics! Unsurprisingly, the Grammy-winning singers handled it like the pros that they are.
Grande covered songs like Britney Spears's "Oops!...I Did It Again," Cher's "Believe," Whitney Houston's "How Will I Know," and Céline Dion's "It's All Coming Back to Me Now," while Clarkson nailed Shania Twain's "Any Man of Mine," Alanis Morissette's "You Oughta Know," and Toni Braxton's "Un-Break My Heart." At one point, Fallon even interjected to exclaim, "These guys can sing!" We couldn't agree more! As for the winner, we'll have to wait a little longer to find out when the premiere of That's My Jam airs on 29 Nov. Until then, watch the teaser above!