Katatonia is a Swedish metal band formed in Stockholm in 1991 by Jonas Renkse (formerly aka Lord Seth) and Anders Nyström (formerly aka Blakkheim). The early Katatonia albums are noted for the overall melancholy of their sound, often giving them the classification of doom metal. Katatonia's more recent albums have progressed to a wider sound, with modern overtones, dropped guitars, symphonic synths and arrangements, alternative sounds and generally heavier riffs.
Opeth's Mikael Åkerfeldt performed the growling vocals on Brave Murder Day and Sounds of Decay after regular Katatonia singer (and then drummer) Jonas Renkse became unable to scream properly. During this time, the band decided to change their sound to a more soft sound with clean vocals beginning with 1998's Discouraged Ones. This shift in instrumental tone and vocal style was accompanied by an appreciable decrease in the length of the band's songs, with latter period songs typically lasting around four minutes.