"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.

My beautiful granddaughters use to sing this song, such awesome memories

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 "....😀