Effective period / Period of releases: 1999 - 2024

Members: Tony Kakko, Henrik Klingenberg, Marko Paasikoski, Tommy Portimo, Jani Liimatainen, Janne Kivilahti, Elias Viljanen, Mikko Härkin, Pasi Kauppinen, Himmelkraft

A melodic power metal band from Kemi, Finland, active since 1999.

Initially founded in 1996 as a hard rock band Tricky Beans (later Tricky Means), the group settled on the name Sonata Arctica in 1999 as their musical style had changed into power metal and they needed a more "heavy metal" name for the band.

Current line-up:
Tony Kakko – vocals (1996–), keyboards (1996–2000)
Tommy Portimo – drums (1996–)
Henrik Klingenberg – keyboards (2002–)
Elias Viljanen – guitar (2007–)
Pasi Kauppinen – bass (2013–)

Former members:
Marko Paasikoski – bass (2000–2013), guitar (1996–1999)
Jani Liimatainen – guitar (1996–2007)
Mikko Härkin – keyboards (2000–2002)
Janne Kivilahti – bass (1998–2000)
Pentti Peura – bass (1996–1998)