Excellent work!
Wow! I really enjoyed this movie. The story was great and the song fit it very well.
I found the animation a little bit lacking. The shape tweens were pretty goofy and some use of ease-in/out would have helped the animation be a little smoother. Of course, the jerky animation might have been your planned style for this piece.
I can ignore a lot of my technical peeves with this simply because the concept is so good. All in all, this is super work.