found: Wikipedia, April 28, 2015:(Kristoffer Rygg, born September 9, 1976, in Oslo, Norway, is a vocalist, musician, and producer; known as the frontman of the band Ulver as well as being former producer, lyricist and singer of Arcturus; stage names Garm, Trickster G. Rex, Fiery G, Maelstrom, G. Wolf, Christophorus G. Rygg, God Head; known for his talents in a wide array of styles, including black metal, avant-garde metal and rock, psychedelic, experimental music, ambient, electronica, and film music)