Finntroll is a band from Helsinki, Finland, that combines folk metal, black metal, and Finnish traditional dance Humppa. Finntroll's lyrics are mostly in Swedish, the only exception being the song "Madon Laulu" on Visor Om Slutet. Finntroll's original singer, Katla, decided to use Swedish over Finnish since he was part of a Swedish-speaking minority in Finland and the sound of the language seemed to better suit the band's "trollish" outfit. Despite several vocalist changes, this tradition has continued.