Career
He is best known as the former guitarist in the black metal band Mayhem under the stage name Blasphemer, which he took from a Sodom song. He joined the band in 1995, but parted ways in late 2008. He also plays in various other Norwegian bands: In Silence, Aura Noir, Nader Sadek, Mezzerschmitt, and the Portuguese band Ava Inferi.
He resides in Portugal.