Guitarist and producer sometimes known as "SOMA" who is best known for his work as one half of the critically-acclaimed American drone metal act Sunn O)))) along with Greg Anderson. Musically active since the mid-90's, he has also been a member of the bands Burning Witch, KTL and Khanate. He worked as a music journalist and was the publisher of the black metal fanzine Descent in the nineties before focusing on his music career.