"Let it Go" is a song from which famous Disney animated movie?

I haven't watched Frozen, but I heard the song "Let it go" multiple times. Good example how one soundtrack can receive more popularity than its movie.

I love the movie Frozen. it was made way after I was a kid.

I have 2 friends. Their names were Anna and Elisa, which is nearly the same as Anna and Elsa, so I often thought of them as the " Frozen sisters "....😀