Opeth is a Swedish progressive metal band from Stockholm. Formed in 1990, the group originally featured vocalist David Isberg, guitarists Mikael "Micke" Bergström and Dan Nilsson, bassist Martin Persson, and drummer Amirion "Rille" Evén. Isberg invited Mikael Åkerfeldt to play bass later that year, who in 1992 would take over as frontman. The current lineup of Opeth features Åkerfeldt on guitars and lead vocals, Martín Méndez on bass (since 1997), Fredrik Åkesson on guitars and backing vocals (since 2007), Joakim Svalberg on keyboards and backing vocals (since 2011), and Waltteri Väyrynen on drums (since 2022).