I think its from the Peter Pan movie with music by Newton...its the movie that came out in 2003 with live characters. I'm not sure, though, but I think its the last song in the movie where Peter gets back his "powers" and beats Hook, and then he gets this smile on his face and then THE SONG...I just saw it this past summer with my kids. Sounds familiar. I tried to get it on itunes but you can only listen to 30 secs...hope this helps.