Legacy of Tuomas Holopainen

Epica is a Dutch symphonic metal band founded by guitarist and vocalist Mark Jansen after his departure from After Forever. Originally formed as a symphonic metal band with gothic influences, Epica later incorporated strong death metal elements into their sound. Starting with their third album, progressive metal influences also became evident. Additionally, the band often incorporates thrash metal and groove metal riffs, black metal elements, power metal sections, and influences from Arabic music. Some songs also incorporate electronic elements, djent transitions, and folk metal melodies inspired by Middle Eastern, Chinese, and Celtic traditions.

Visions of Atlantis is an Austrian symphonic metal band formed in Bruck an der Mur, Styria, in 2000. Inspiration came both from successful Finnish symphonic metal band Nightwish and from the myth of Atlantis, as well as a pirate theme in recent albums.

After Forever was a Dutch symphonic metal band with strong progressive metal influences. Originally formed as a death metal band in 1995 by Mark Jansen and Sander Gommans under the name Apocalypse, they later shifted their sound towards symphonic metal with the introduction of Floor Jansen to the band.

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.