 He has produced recordings by "Sleep Chamber", "Dokument", "The Product", "Daze OF Trance" and "Women of Sodom".Between 1981 and 2000, Zewizz released close to 100 recordings as the driving force behind Sleep Chamber.Sleep Chamber fell silent in 2000 as a result of Zewizz's drug addiction, but in 2007 Sleep Chamber reformed (now known as SLEEPCHAMBER) and began recording again.