He has also took part as a drummer with the bands Gorgoroth, Zyklon-B, Gehenna and Keep of Kalessin. He first joined Satyricon temporarily to record the band second demo "The Forest is My Throne" (split album form Satyricon and Enslaved from the year 1993 - "Black Winds" and "Min hyllest til vinterland" are the two other song of the 3 songs demo album), but that changed in the next release, the first studio album "Dark Medival Times" (1994), where he was promoted to a permanent member. 