Twitter: LateNightJimmy: @jimmyfallon, @mariahcarey, & The Roots singing “All I Want for Christmas Is You” with classroom instruments. Enjoy! http://t.co/nRgTrJcL

LateNightJimmy: @jimmyfallon, @mariahcarey, & The Roots singing “All I Want for Christmas Is You” with classroom instruments. Enjoy! http://t.co/nRgTrJcL
Twitter / LateNightJimmy