Kogumaza make music like a pot of water constantly on the boil; bubbling, steaming and popping violently, spraying scalding heat out in all directions before settling down to seethe quietly till the heat gets turned back up again. Supporting old friends Billy Mahonie at one of their special comeback gig earlier this year, Kogumaza growl through a set of distorted drone-rock that could put hair on anything’s chest, and chat to us about how to make such interesting sounds.