 Grutle Kjellson

Kjetil Tvedte Grutle, better known as Grutle Kjellson (born 24 December 1973 in Sveio, Hordaland, Norway), is the bassist and vocalist of the Norwegian progressive black metal band Enslaved.Together with Ivar Bjørnson, they are the founding and the only constant members, as well as the main songwriters of the band.