Spiral Architect is a Norwegian progressive metal band from Oslo, Norway. They have recorded one acclaimed demo and one album, A Sceptic's Universe, since they began in 1993, as well as a Fates Warning cover "A Prelude to Ruin" for the tribute album Through Different Eyes - A Tribute to Fates Warning. Singer Øyvind Hægeland was lead vocalist of Norwegian progressive metal band Manitou during the 90s, symphonic avant-garde metal band Arcturus from 2003–2005 and Scariot for their latest studio album. Drummer Asgeir Mickelson played drums for Norwegian heavy metal band Borknagar from 2000–2008, as well as performing session and live drums for a variety of bands including Testament, Sturmgeist, Vintersorg, Enslavement of Beauty, Ihsahn and Lunaris. Guitarist Steinar Gundersen has since 2000 been working as session musician for Norwegian black metal band Satyricon. Steinar Gundersen and Lars K. Norberg are members of the black metal band System: Obscure. Asgeir Mickelson and Lars K. Norberg are members of the death metal band Thornbound.