She did it with a little bit of sass and a whole lot of class.

On New Year's Eve, Tony-winner Idina Menzel aka Adele Dazeem performed the Oscar-winning smash "Let It Go" on New Year's Rockin' Eve.

You may have heard it before. Like from Frozen. Probably like a million times.

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For the most part, Idina totally killed it. But toward the end of her LIVE outdoor performance in the cold, it appears she didn't hit a note or two. You can watch the full performance here:

It happens.

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