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Video: “All I Want for Christmas Is You”

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Mariah Carey, The Roots and Jimmy Fallon sing "All I Want for Christmas Is You"

Mariah Carey, The Roots and Jimmy Fallon sing "All I Want for Christmas Is You"

Jimmy Fallon, The Roots and some talented kids use children’s musical instruments to back up Mariah Carey singing “All I Want for Christmas Is You.”

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