It was... Okay.
It wasn't all that great. But it wasn't a fail, I'll put it at that.
+ The graphics were done well, but half the 3D animations I've seen here are like that.
+ Liked the song.
- The 3D graphics were nice, yes. But they were too... Round. And most madness characters (at least what I've seen) don't have eyes. Work on that on the finished product.
- I'd have liked a little more animation. I don't think a single character moved in that animation. Try fixing that.
- The clown's mask is an eyesore, compared to the rest of the animation. (if you can call it an animation) Fix that.
Overall: I didn't like it, but I don't speak for everyone. Good luck on the finished product.