Empiricism is the fifth studio album by Norwegian progressive metal band Borknagar. It is their first studio album to feature Vintersorg frontman Andreas Hedlund on vocals and Jan Erik "Tyr" Tiwaz on

Øystein Garnes Brun is a Norwegian guitarist who is a member of the progressive metal band Borknagar. He is the only permanent member of the group and wrote the majority of their songs. Brun is noted