By Kathleen Perricone

Adele Dazeem — we mean, Idina Menzel — followed up her incredible Oscars performance with an appearance on The Tonight Show Starring Jimmy Fallon … but this version of “Let It Go” was a bit more elementary.

Backed by Jimmy and his house band, The Roots, Idina, whose name was mangled by John Travolta on Sunday night (watch below), sang her Academy Award-winning tune from Frozen using her gorgeous pipes and a bunch of classroom instruments.

While Jimmy “played” the blocks — which were L, I, and G for the song’s title — Idina handled the Triangle.