Ketzer is a German thrash metal band with black metal, death metal, and post-rock influences from Bergisch Gladbach. The band was formed in 2003. They released three demos before putting out their debut album Satan’s Boundaries Unchained in 2009. Their early work is occasionally compared to that of Deströyer 666, whose drummer Mersus produced the debut album Satan’s Boundaries Unchained. However, the band members themselves cite Black Sabbath, Iron Maiden, Deep Purple, and Judas Priest as their main influences. Read more on