Escherichia Coli - Die Traurigkeit, Die Toten Kann (tape, Gezonde Boerse Copulaties GBC 03, 1984?)
E. Coli is Luc van den Bruel, who worked closely with Erik Vloeberghs, a.k.a. Angst. Many of the Angst (and related) releases can be found on the excellent Club Moral Podcast but I don't think they will do this one. It's one of the two tapes made by E. Coli for the Angst label 'Gezonde Boerse Copulaties'. According to the Club Moral list E. Coli "is now a successful businessman". Nihilistic style low ambient noise, not too dissimilar to Angst.