Updated: Wednesday, 05 Dec 2012, 9:49 AM CST Published : Wednesday, 05 Dec 2012, 9:45 AM CST
(LIN) - Thank you Gawker for spreading the news of this fabulous holiday video. By far, this is one of the most adorable sing-a-longs going viral out there.
But you can't go wrong, really, when you put Jimmy Fallon, The Roots, a surprise pop-in from Mariah Carey and a bunch of cute kids playing children's musical instruments together. It's a perfect mix. Pure holiday spirit, enough to make almost anyone smile.
Backstage before the show, Jimmy, Mariah Carey, and The Roots grabbed some instruments you'd find in an elementary school classroom and stopped by the Late Night "Music Room" to sing Mariah's holiday classic, "All I Want For Christmas Is You." (instrument list below)
Jimmy Fallon - wood block, tambourine, bass drum, kazoo