Roots of Helloween

Freedom Call is a German power metal band formed in 1998. The band tours regularly and the current line-up includes one original member, lead vocalist and songwriter, Chris Bay. Freedom Call has released 14 albums in total, eleven of these studio albums.

Kat is a Polish heavy metal band formed in Katowice in 1979.

Victory is a German heavy metal and hard rock band from Hanover, most successful in the 1980s. With extensive tours and radio airplay, the band also made a breakthrough in North America.

Screaming for Vengeance is the eighth studio album by English heavy metal band Judas Priest, released on 1 July 1982 in the United States and on 9 July 1982 in the United Kingdom by Columbia Records. The album continues the more commercial, streamlined direction that their previous two albums, Point of Entry and British Steel had taken, albeit returning to a heavier, harder sound.

Magica is a Romanian power metal band.

Overkill is an American thrash metal band, formed in 1980 in New Jersey. They have gone through many lineup changes, leaving bassist D.D. Verni and lead vocalist Bobby "Blitz" Ellsworth as the only remaining original members. The band's current lineup includes Verni, Ellsworth, Dave Linsk on lead guitar, Derek "The Skull" Tailer on rhythm guitar, and Jeramie Kling on drums. Notable former members include guitarists Dan Spitz, Bobby Gustafson, Merritt Gant and Joe Comeau, and drummers Rat Skates and Jason Bittner.

Taken by Force is the fifth studio album by German band Scorpions, released by RCA Records in 1977. It was the band's first album to feature drummer Herman Rarebell and their last studio album to feature guitarist Uli Jon Roth. Roth left in 1978, following the end of the album's tour, and was replaced by Michael Schenker, then by Matthias Jabs.

Hellhammer was a Swiss extreme metal band from Nürensdorf, active from 1982 to 1984. Although the band's sound and style were heavily criticized and poorly reviewed during their active years, they have been widely praised in retrospect and are often regarded as a key influence on black metal. In June 1984, Hellhammer disbanded but two of its members soon formed the influential extreme metal band Celtic Frost.