Hellsau was a project from Bern, Switzerland formed by ex-Swamp Terrorist STR (vocals and sampling) with DJ Killroy (programming) and Bruno S (guitars). Involved guest musicians are Ane H. of Swamp Terrorists and Rui Sidonio Ferreira of Bizarra Locomotiva. Their music can be described as a sick and very unusual mix of Hard Techno, Electro-Industrial and sampled guitar riffs.

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