Abruptum is a black metal and dark ambient solo side-project band from Sweden. It is run by Evil (Morgan Steinmeyer Håkansson) of Marduk, but the band was formed in 1989 by IT (aka Tony Särkkä). All (aka Jim Berger), Ext and Evil joined the band later. IT was one of the leaders of the True Satanist Horde, part of the Swedish Black metal scene. Euronymous, co-founder of Mayhem and founder of Deathlike Silence Productions, described Abruptum as "the audial essence of pure black evil".
IT had already planned to create the band in 1987, but it wasn't until 1990 that he found the right members to do it. The same year, they recorded their first two demos. After the release of the first demo, they fired their bass player, Ext. After the release of a 7-inch EP Evil in 1991 (later re-released by Psychoslaughter), All began to drink heavily and was forced to leave the band. IT then found a new member in "Evil". Around this time, IT reunited with All to form the side project, Vondur.