Keep Of Kalessin is a formidable entity in the realm of extreme metal, hailing from Trondheim, Norway. The band was formed in 1993 by guitarist Obsidian C., also known as Arnt Grønbech. Their signature sound is a blend of black metal's ferocity with the grandiose elements of symphonic metal, creating a style that is both epic and aggressive. Their lyrical themes often delve into mythology and fantasy, in which dragons are a recurrent motif, reflecting the band's name which itself is derived from Ursula K. Le Guin's Earthsea saga.

Over the years, Keep Of Kalessin has evolved both in lineup and musical direction. From their raw and intense early works like "Through Times Of War" and "Agnen: A Journey Through The Dark," the band has expanded its sonic landscape with each release. Albums such as "Armada" and "Kolossus" solidified their standing within the metal community, mixing searing guitar work with expansive orchestral arrangements. This evolution continued with the release of "Reptilian" and "Epistemology," both of which were critically acclaimed for their technical prowess and sophisticated songwriting. "The Dragontower" even earned them a spot in the finals of Norway's national Eurovision Song Contest selection, showcasing their appeal to a wider audience. With the release of their more recent work like "Heaven of Sin" and "Katharsis," Keep Of Kalessin continues to push the boundaries of their genre, remaining a dynamic and influential force within the world of extreme metal.