Okay, so this isn't technically park music per say, but it was featured in the Year of A Million Dreams commercials a few years ago and it's just so beautiful and jubilant.

http://www.youtube.com/watch?v=V8O0tIJRu28

It's called "Flying" and it's from the most recent live-action version of Peter Pan.

We're in the teens now! I leave a week from Friday! Huzzah!