Very good video.
Replays 10/10
Music 2/10 meh
Sound Effects 4/10 (The hits sounded odd)
Transitions 9/10
Synching 10/10
Overall 8/10
The singing at the beginning was horrifically unsynched. In fact, the whole video was pretty poorly synched.
The effects would've been cool if it synched with the music. More variety of effects were needed too, IMO (not counting random words popping up as effects).
The transitions were nice, but you needed more variety with that.
Replays were meh, and you didn't speed up/slow down replays at the correct times.