Nice concept
Very cute, very adorable. The high frame rate and nice use of motion guides really gave the animation a smooth and classic feel, and your drawing skills have improved quite a bit during your practice.
But the aspect I feel most inclined to praise you for is your concept. Too many users don't think about a script before beginning an animation project, but your had a very nicely thought out script that ultimately worked out to be sweet. True, there was a point or two where I didn't exactly understand what each character was thinking, but at least there was constant motion that was nicely timed to the music.
All in all, a good job.