Nice overall, but content was lacking.
I liked the styles of art included in the movie. I wasn't too fond of the music selection, but I did not detract points for that (if you're curious, I thought it was too repetitive and didn't really expand past the first two verses). My biggest issue with the movie was finding the connection between the animation and the music -- it was hard to do. Several parts of the animation seemed like they were just thrown in there just because they looked cool. Also, it took me out of the experience when the main character was actually singing. I'm not sure why; I guess it looked a little forced and didn't really add to the animation.
My other issue with the movie is that the introduction screen with all the cast is way too long. Put that at the end of the movie or let people skip through it.
Overall you guys did a great job. If you do another music video like this, study the music more in-depth and let the animation serve to enhance the music, even if that means scrapping animation parts that don't support the music.