Black metal guitarist who is known under the moniker of Teloch. He is best recognized for his work with the bands God Seed, Gorgoroth, and Mayhem.
He first started his career in music in the 1990's, playing in the punk bands Dodsdomt and Legions from Horten. He then went on to found the group Nidingr in 1996. He didn't join the group Mayhem until 2011 and appeared on their 2014 album Esoteric Warfare.
He is also known for his work in musical theater and composed several songs for the Norwegian adaptation of Mother Courage and her Children.
He was born and raised in Oslo, Norway.