That was actually nice to watch, probably because I like metal and the sped up replays complimented the song. But yeah, next time pick a Children of Bodom song that's slowish like "Next in Line" or something and focus on sync. 9/10
Awesome replays. NIce effects, and the speed up made it look even better.
I cant really find anyhting wrong with this video.
Maybe you could try a slower song next time.