Review
Flash animation of this kind is hard because it's too static. Try not to focus too much on the guy playing the guitar(camera moving helps but doesn't solve the issue) and put something in between, like animations of the lyrics(most common) or anything else. That helps to keep the viewer focused. :p
The guitar grabs afaik didn't seem to be correct, which makes this even worse to watch for itself.
It has a good song though, hence the decent score.
Cheers.