Turn It Up: Kelly Clarkson, Meghan Trainor, John Oliver More Sing Since U Been Gone

Jimmy Fallon challenges Tonight Show guests Kelly Clarkson, Shaquille O Neal, John Oliver, Rachel Brosnahan, Mumford Sons, Meghan Trainor, Anthony Anderson and The Roots to sing Kelly s hardtocroon hit Since U Been Appearance order below: (0:03) Kelly Clarkson (0:11) Shaquille O Neal (0:18) Jimmy Fallon (0:22) Rachel Brosnahan (0:25) John Oliver (0:28) The Roots (0:35) Meghan Trainor (0:40) Mumford Sons (1:04) Anthony Anderson Subscribe NOW to The Tonight Show Starr