Roots of Tristania

Dark Tranquillity are a Swedish melodic death metal band from Gothenburg, formed in 1989. They are considered one of the pioneering acts of the Gothenburg metal scene, which also includes bands such as At the Gates and In Flames. After a nearly three-decade long collaboration of four founding members frequent lineup changes between 2015-2021 have left only vocalist Mikael Stanne as an original member, together with long-time keyboardist Martin Brändström. The current lineup of the band consists of Stanne (vocals), Brandstrom, Johan Reinholdz, Peter Lyse Karmak, Christian Jansson (bass), and Joakim Strandberg Nilsson (drums).

Tiamat is a Swedish metal band founded near Stockholm in 1990 and led by Johan Edlund. To date they have released ten studio albums. The band went through a number of stylistic changes in their earlier releases before settling on gothic metal. Under Edlund's leadership, the band would modify their style with influences ranging from Black Sabbath, Mercyful Fate, Candlemass, Pink Floyd and King Crimson combined with Sumerian lyrical themes. H. P. Lovecraft's writings also appear to have influenced Tiamat's thematology, a development consistent with a broader trend in death metal culture.

Nightwish is a Finnish symphonic metal band from Kitee. The band was formed in 1996 by keyboardist Tuomas Holopainen, guitarist Emppu Vuorinen, and former lead vocalist Tarja Turunen. The lineup grew with drummer Jukka Nevalainen and bassist Sami Vänskä. In 2001, Vänskä was replaced by Marko Hietala, who also took over the male vocalist role previously filled by Holopainen or guest singers. Nightwish has been successful in Finland since the release of their debut album, Angels Fall First (1997), and were later recognized internationally through the release of their albums Oceanborn (1998), Wishmaster (2000) and Century Child (2002).

Kreator is a German thrash metal band from Essen, formed in 1982. Their current line-up consists of lead vocalist and rhythm guitarist Miland "Mille" Petrozza, drummer Jürgen "Ventor" Reil, lead guitarist Sami Yli-Sirniö, and bassist Frédéric Leclercq. The band's line-up has changed multiple times throughout its 44-year career, most noticeably their bassists and lead guitarists. Petrozza and Reil are the only two original members left in Kreator, although the latter left the band in 1994 but rejoined in 1996. Yli-Sirniö has been the lead guitarist of Kreator since 2001, while Leclercq joined in 2019 as the replacement of Christian "Speesy" Giesler, who had been in the band since 1994.