Nokturnal Mortum is a black/folk metal band from Kharkiv, Ukraine formed in 1994. Biography: They started as a death metal band named Suppuration in 1992, then turned to black metal and changed their name to Crystaline Darkness, but had to change the name back in 1993/94 to Nocturnal Mortum due to a band already existing with that name. The band then changed a letter to distinguish themselves yet again to avoid another double name. Nokturnal Mortum gained their first Western recognition with the release of their album Goat Horns