One could easily debate that Jimmy Fallon is at a point in his career where he doesn't need to work as hard as he used to to stay on top.  But now that he has the Tonight Show reins, he showing no signs that he's backing down and this genius rendition of "Let It Go" from Disney's "Frozen" is glorious proof.

Just when we thought every possible twist on this popular song from the movie, Jimmy and The Roots give 'unplugged' at twist and perform "Let It Go" with Idina Menzel using common kindergarten classroom instruments.