Carrie Underwood and Blake Shelton joined Jimmy Fallon, the Roots and an A-list roster of talented stars to do an acappella version of 'We Are the Champions' a la 'The Brady Bunch.' The collection of artists came together for a beautiful, epic rendition of the track in honor of the Super Bowl.

The collab followed Sunday night's (Feb. 1) Super Bowl win by the Patriots.

Fallon, surrounded by the Roots in colorful squares, starting off the song by singing the opening line: "I paid by dues." Then Underwood popped in, taking over vocals while Fallon watched from the adjoining square. Sam Smith and Ariana Grande followed, completing a powerful harmony.

Next up, Shelton showed up for the next verse, his deep, country voice changing the song's direction and giving it a unique spin. And as he does, the country star brought humor, playfully waving at Fallon nearby before the host flicked him away. His fellow 'The Voice' judges, including Christina Aguilera, also lent their voices to the really cool video, as did One Direction, Meghan Trainor.

In addition to closing out the Super Bowl, Underwood kicked it off with her pre-taped performance of 'Waiting All Day for a Super Bowl Fight,' and boy did she sparkle. Watch that here.

See Childhood Pics of Carrie Underwood, Blake Shelton + More

You Think You Know Blake Shelton?