About Impurity: There have been several metal bands named "Impurity", two of which are active: 1) IMPURITY (POL). Polish death metal band formed in 1987 (inactive). Releases: Immense Decay (Demo) 1989 In Pain We Trust (Demo) 1990 2) IMPURITY (BR). A Brazilian black metal band formed in 1990, with 4 albums (The Lamb's Fury - 1993, Into The Ritual Chamber - 1996, Satanic Metal Kingdom - 2004, Necro Infamists of Tumulus Return - 2006) and one EP (Guests of the Infernal Pit - 2004) released. Signed with Cogumelo Records.