Opeth，Progressive rock/metal band that formed around 1990 in Stockholm, Sweden. The band went through various lineups before settling on the current lineup of Mikael Åkerfeldt - guitars, vocals (1990-)/ Fredrik Åkesson - guitars (2007-)/ Martin Axenrot - drums, percussion (2006-)/ Martin Mendez - bass (1997-), and Joakim Svalberg - keyboards (2011-).