i feel theres some subtle vocal noises going on here that are dipping in and out of the mix. i could be wrong, but whatever the noises are, adds to the overall violent and expressive nature given by the title of the song. this sorta stuff inspires me to create some metal-like vocals over some attempts of mine to sound like grindcore. this deserves a second listen ! im getting vibes of dillinger escape plan, really heavy stuff that would put a halt on a karaoke night !