His previous credits include Gorgoroth, Zyklon-B, Gehenna and Keep Of Kalessin. He joined Satyricon temporarily for the recording of the demo "The Forest is My Throne", later joining the band full-time. He currently teaches at a mathematics college in Oslo. He is currently an endorsee of Mapex drums and Zildjian cymbals, although he has been known to also use Pearl drums, Sabian cymbals, and Wuhan China cymbals. His drum-style varies for different bands; as in 1349 and earlier Satyricon he extensively uses blast beats, however his recent Satyricon work is more simplistic and mid-tempo. He is generally regarded as one of the most proficient and fastest drummers in the black metal scene.