Watch One Direction, Meghan Trainor, Ariana Grande And More Sing 'We Are The Champions' A Cappella

Jimmy Fallon gathers his talented friends for a post-Super Bowl song.

Jimmy Fallon has gained a lot of talented friends throughout the course of his late-night shows. On Sunday, he pulled them together to create one awesome cover of Queen's "We Are The Champions" to kick off the post-Super Bowl episode of "The Tonight Show Starring Jimmy Fallon."

Fallon gathered Meghan Trainor, Sam Smith, Carrie Underwood, Ariana Grande, Usher, One Direction, Christina Aguilera and Blake Shelton to sing on the a cappella song, leading the way over layers of The Roots' smooth harmonies. In the Brady Bunch-structured vid (that's the only way to fit all that star power in there!), Grande and Aguilera seem to have a diva-off at the end. Watch the clip now to see all your favorites together!