Thought you knew all the Frozen songs in existence? WRONG. Josh Gad, Jonathan Groff, and Kristen Bell (a.k.a. Olaf, Kristoff, and Anna, respectively) crashed the Disney Animation Studios to reveal all the secrets behind how the uber successful movie was made. Through song, of course!
Sidenote: This kinda sorta makes up for the fact that Josh Gad and Jonathan Groff only got one song each throughout the entire movie. Kinda sorta makes up for it.