Roots of Andre Matos

Helloween is a German power metal band founded in 1984 in Hamburg by members of bands Iron Fist, Gentry, Second Hell and Powerfool. The band has at times been called one of the most influential European heavy metal bands of the 1980s. Its first lineup consisted of singer and guitarist Kai Hansen, bassist Markus Grosskopf, guitarist Michael Weikath and drummer Ingo Schwichtenberg. By the time Hansen left Helloween in 1989 to form Gamma Ray, the band had evolved into a five-piece, with Michael Kiske taking over as lead vocalist. Schwichtenberg and Kiske both parted ways with Helloween in 1993; Schwichtenberg died two years later as the result of suicide. Between then and 2016, there had been numerous line-up changes, leaving Grosskopf and Weikath as the only remaining original members. As a septet, their current lineup features all of the surviving members of the Keeper of the Seven Keys lineup, in addition to the remaining members from the Keeper of the Seven Keys: The Legacy-era.

Edguy is a German power metal band formed in 1992 in Fulda by students Tobias Sammet, Jens Ludwig, Dominik Storch, and Dirk Sauer. Initially named after their math teacher, the band faced early rejections from record labels but persevered, releasing their unofficial debut album, Savage Poetry, in 1995. They gained wider recognition with their subsequent albums, including Kingdom of Madness (1997) and Vain Glory Opera (1998), featuring guest appearances from notable musicians. Over the years, Edguy has evolved their sound, with Sammet also launching the successful metal opera project Avantasia. The band has released multiple studio albums, including Age of the Joker (2011) and Space Police: Defenders of the Crown (2014), and has engaged in extensive touring.