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If this doesn’t get you in the holiday spirit, then nothing else will do.

Watch as pop/R&B singer Mariah Carey joins Jimmy Fallon and The Roots backstage before Monday night’s show for a musical treat like no other.

The band, late night show host and singer grabbed some instruments you’d find in an elementary school classroom and headed to the Late Night “Music Room” to sing Mariah’s holiday classic, “All I Want For Christmas Is You.” (Check out the instrument list below to see what they used.) Isn’t this the cutest thing you’ve ever seen? This is why this is the most wonderful time of year.

Jimmy Fallon – wood block, tambourine, bass drum, kazoo

Mariah Carey – vocals

Questlove – wooden clacker w/ afro pick

Mark Kelley – Fisher Price xylophone

Kamal Gray – recorder

James Poyser – melodica

Captain Kirk – ukulele

Tuba Gooding Jr. – kazoo

Frank Knuckles – bongos

Black Thought – sleigh bells

Download Mariah’s “Merry Christmas II You” here on iTunes. And be sure to wish someone a very Merry Christmas wherever you are! Catch Late Night With Jimmy Fallon weeknights on NBC at 12:35AM EST.