Idina Menzel, Jimmy Fallon, and The Roots sing the Oscar-winning ‘Let It Go’ with toy instruments

Just when you thought the insanely catchy music from Disney’s Oscar-winning animated adventure “Frozen” couldn’t get any catchier, along comes star Idina Menzel, “Tonight Show” host Jimmy Fallon, and the legendary Roots crew. The group delighted viewers with a version of the Academy Award-winning ballad “Let It Go” that is guaranteed to get stuck in your head.

Menzel stopped by “The Tonight Show” this week and joined Fallon and house band The Roots for a very special version of "Let It Go" -- one accompanied by what can only be described as kid instruments like kazoos, triangles, toy blocks, and xylophones.

Menzel provides the much needed “Let It Go” vocals (along with not-so-essential triangle dings), Fallon clops toy blocks together and jams on a Casio keyboard, Questlove toots on a kazoo, Black Thought plays the tambourine, and the rest of the Roots add xylophone, melodica, ukulele, lemon shaker, and bongos to the musical mix. It’s a far cry from the orchestrated version that Menzel sang at the Oscars on Sunday night, but the unlikely ensemble (and equally unexpected instrumentation) really makes this version work.

Between this video and John Travolta’s hilarious Oscar gaffe on Sunday, Menzel is an online sensation this week. Travolta, who reportedly suffers from dyslexia, introduced Menzel’s performance of “Let It Go” at the Academy Awards and mistakenly called the singer “Adele Dazeem.” The flub instantly went viral on Twitter and led to one site creating the “Adele Dazeem Name Generator” -- a widget that will “Travoltify” your name.

"Frozen" arrives on Blu-ray on March 18, and the "Sing-Along" version of the animated film is still playing in theatres.