Oh it's just sooo hard to pick. I love almost anything Alan Menken has done for Disney, and he's done so much. I'll just pick two from him and two other favorites.
"Kiss the Girl" - Little Mermaid (love the movie and all the music too)
"That's How You Know" -- Enchanted (OMG - I think of that song and want to dance every time I'm in Central Park)
"Zippity Do Dah" -- from Song of the South (The movie was a real sleeper, though. Don't know what all the fuss is about racial issues with it, as I'm be surprised if anyone could make it through seeing the whole thing without dozing off. I never saw it as an adult though. Just saw it as a kid.) The song, though, is a classic.
"He Mele No Lilo" -- Lilo and Stich (That great song sung by that Hawaiian kid's choir.) And getting Wynonna Judd to sing Burning Love was brilliant in that movie. I love her version -- like it so much better than the Elvis's classic hit version.
I am sooo glad they are playing some of their great music in their parks and incorporating it into their attractions.