The Roots, Mariah Carey: Group Joins Singer in ‘All I Want for Christmas Is You’ (VIDEO)

While spreading some holiday cheer, the Roots paired up with an unlikely artist for a song mash-up -- Mariah Carey!

Appearing on "Late Night With Jimmy Fallon," house band the Roots joined Mariah Carey and school children in singing a toy-instrument rendition of Mariah's hit Christmas song "All I Want For Christmas Is You."

Using different elementary school music instruments like a tambourine, bass drum, kazoo, a xylophone, bongos and more, the artists created a unique hit.

Check out the video below.