Swedish experimental/ extreme death metal band formed in 1987, featuring founder members, Jens Kidman - Vocals and Fredrik Thordendal - Guitars, plus Marten Hagstrom - Guitars, Dick Lövgren - Bass and Tomas Haake - Drums.

They released their debut album, "Contradictions Collapse" in 1991, followed by: "Destroy Erase Improve" (1995), "Chaosphere" (1998), "Nothing" (2002), "Catch Thirtythree" (2005), "obZen" (2008), "Koloss" (2012), plus 2016's: "The Violent Sleep of Reason".

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