'Flying Dreams' from "The Secret of Nimh" is one of my favorites!
This is a great movie to watch with your kids, and I highly recommend it. Flying Dreams was originally recorded as a solo, but when it was finished I decided it needed another voice. I'd always wanted to sing with Olivia Newton-John, and her voice was the perfect match. Olivia brings a whole other level of texture to the song that it didn't have before.