December 5th, 2012 | Posted by Juicy Carter | Posted In Performances,Television

Last night, newly enlisted American Idol judge and pop icon, Mariah Carey, surprised the studio audience by joining Jimmy Fallon and The Roots in the Late Night music room to sing her Christmas classic, All I Want For Christmas Is You. The singing sensation was joined by a few kids and elementary school instruments as she put a spin on her famous holiday anthem.

Watch below and post your thoughts!

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