I've been on this kick, listening to a ton of black metal beside darker ambient and electronic music. Not necessarily revolutionary considering Darkthrone's long-standing interest in those areas, the introduction of keyboards into BM, Burzum's prison albums, the earlier paths of Throbbing Gristle, Psychic TV, Nurse With Wound, Whitehouse, and Coil (read England's Hidden Reverse, if you haven't), Dominick Fernow's ...