Brian "Lustmord" Williams has created a sound that epitomizes the subgenre of dark ambient. He started recording while assisting the seminal industrial ensemble SPK in the early '80s when that project was at its most caustic. Lustmord's sound investigations are exquisitely crafted manifestations of horror that balance sublime sound references with the body's natural queasiness about ultra-low frequencies (infrasound -- frequencies below 20 hz -- has been known to cause vomiting, permanent hearing loss, and even death). Lustmord has extracted the eeriness from field recordings made in crypts, caves, and slaughterhouses, and combined it with occasional ritualistic incantations and the haunting wail of Tibetan horns. His seamless treatments of acoustic phenomena encased in digitally expanded bass rumbles have the darkly ambient quality of nightmares that take you to the blackest of abysses.