WATCH: Old Cop Does ‘Wobble Dance’ Like a Boss at Mardi Gras

Jimmy Fallon, Idina Menzel & The Roots Sing "Let It Go" from "Frozen" (w/ Classroom Instruments)Idina Menzel stops by the Tonight Show Music Room to perform the Oscar-winning song "Let It Go" from Disney's "Frozen." (Instrument list below) Jimmy Fallon – toy blocks, bass drum, Casio keyboard Idina Menzel – triangle Questlove – kazoo, jingle sticks Mark Kelley – kazoo Kamal Gray – xylophone James Poyser – melodica Luke -…2014-03-04T04:52:00.000Z

An on-duty officer joined the carnival fun by joining in on the choreo of V.I.C.’s Wobble Song.

Your friends would be so into this!

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But the ending is by far the best part. Stick around for it! Robocop makes an appearance!