nothing to it really
This isn't horrible, but it's not exactly good. The same 4 or so frame loop for almost the whole song isn't very creative, and will leave a lot of people bored to the point of leaving. The santa sleigh animation at the start was a 2 frame loop, tweened slightly up and down with a few basic clouds tweened pass.
It basically needs a lot more effort and substance put into it.
But you get a 5, because I've seen a lot worse, and there was obviously *some* effort put into making it.