Jimmy Fallon and Idina Menzel Cover 'Let It Go' With Classroom InstrumentsYay! Jimmy Fallon's ever-enjoyable "classroom instruments" series is back, with Idina Menzel (or is it Adele Dazeem?) joining him and The Roots to perform the song that no one can get out of their head. I watched the shaker guy in the lower right corner for the whole video.
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