Like Xyrhoshi said, a bit too repetitive, although I like the metal content, and it would go nice, AND it loops great. Just try to extend it a little more and add a few different variations or forms.
Hey just some advice, dont worry i wont blow your brains out with senseless insults. But its just a bit too repetitive...It has the potential, but it just needs to be more dynamic. Its kinda like if you say the same joke too many times, itll just be gay....I learnt that the hard way.