Geir was born in Narvik, Norway and raised in a small village called Ballangen. He started playing on his grandfather’s old Magnus organ when he was a couple of years old. After his mother got him a Farfisa organ a few years later he knew that this was what he wanted do for the rest of his life. After music gymnasium he moved south with some stops on the way before ending up in Oslo.

Geir’s amazing playing and arranging skills soon established him as a household name and he started touring internationally in early 1994. Since then Geir has been associated with  some of the finest acts in Norway in a variety of genres: Apoptygma Berzerk, Satyricon, Emperor, Ihsahn, Kovenant, A-Ha, Morten Abel, Godseed, Abbath, Michael Krohn and is now a member of legendary black metal band Dimmu Borgir touring the world with a Nord Stage 3 and a Nord Wave as part of his setup