Career
Tyr is known for his progressive playing style in black metal and his use of extended range basses. Tyr made of use of these in his later work with Borknagar, namely a 6 string fretless on "Origin" and a custom 8 string fretless on "Universal". Tyr has also been a touring bassist for Satyricon, as featured in their live video Roadkill Extravaganza (2001) and with Emperor as seen in Emperial Live Ceremony (2000).
He currently resides in Drammen, Norway.
During June 2010, an announcement was released that due to "general disagreements", January Erik Tiwaz left Borknagar.
