Jimmy Fallon, The Roots, and Music Superstars Sing "We Are The Champions" (A Cappella)

In honor of the Super Bowl, Jimmy and the Roots join Carrie Underwood, Sam Smith, Ariana Grande, Blake Shelton, Usher, Meghan Trainor, One Direction and Christina Aguilera for an a cappella version of "We Are The Champions." Subscribe NOW to The Tonight Show Starring Jimmy Fallon: http://bit.ly/1nwT1aN Watch The Tonight Show Starring Jimmy Fallon Weeknights 11:35/10:35c Get more Jimmy Fallon: Follow Jimmy: http://Twitter.com/JimmyFallon Like Jimmy: https://Facebook.com/JimmyFallon Get more Th

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