Carl-Michael Eide (born July 24, 1974) is a Norwegian black metal drummer, guitarist, and vocalist. He is also known under stage names Aggressor, Czral and Exhurtum. He has played in various black metal and avant-garde metal bands. These include Ved Buens Ende, Aura Noir, Cadaver, Dødheimsgard, Satyricon, Ulver, Infernö and recently the jazz/rock band Virus. His drumming is quite unique in style, with very little repetition and a tendency to shy away from the norm. For example, many of the blast beats on Ved Buens Ende's Written in Waters feature a highly active and non-repetitive right hand, which becomes a separate voice from the foot and left hand, often playing in a different meter than the other two. (This description refers to right-handed drummers; Eide is in fact left-handed.)
His singing abilities are diverse. Other than usual harsh vocals in black metal, he uses a form of croon in the avant-garde metal band's Ved Buens Ende and Virus.
He has gone back to playing guitar and was writing music for the re-grouped Ved Buens Ende, before the band once again split up in early 2007. Beyond that, he continues to write material for Aura Noir and Virus.
He was also a session drummer for Dimmu Borgir on their 1997 tour.
With Satyricon
With Ulver
With Ved Buens Ende
With Aura Noir
With Infernö
With Dødheimsgard
With Virus
With Cadaver