Roots of Ari Koivunen

Sonata Arctica is a Finnish power metal band from the town of Kemi. Created as a hard rock band named Tricky Beans, they later changed to Tricky Means and finally to Sonata Arctica, when they shifted to power metal. The current lineup consists of drummer Tommy Portimo, lead singer Tony Kakko, keyboardist Henrik Klingenberg, guitarist Elias Viljanen and bassist Pasi Kauppinen. All the musicians of the band's history except Portimo also acted as backing vocalists.

Whitesnake were an English rock band formed in London in 1978. The group originated as the backing band for singer David Coverdale, who had recently left Deep Purple. Though the band quickly developed their own entity, Coverdale was the only constant member throughout their history.

Stratovarius is a Finnish power metal band formed in 1984. They have released sixteen studio albums, six DVDs, and six live albums. The band's line-up has changed many times, with no founding member left since the departure of drummer Tuomo Lassila in 1995, and no member from their early recording days left following guitarist Timo Tolkki's departure in 2008. Currently, the longest standing member is singer Timo Kotipelto, who joined in 1994.