The band’s fourth studio album, Restless and Wild was released in

The band’s fourth studio album, Restless and Wild was released in 1982. Fischer left before the recording of the album began, as did his intended replacement, Jan Koemmet . Restless and Wild saw an evolution in the band’s sound, which incorporated characteristics defining the genre later dubbed speed metal . One of the most notable tracks on the album is the opening track ” Fast as a Shark “, to which Kaufmann’s kick drumming on the song is considered a precursor of thrash metal , predating the debut albums of Metallica and Slayer by a year. Gaby Hauke was credited as “Deaffy” on two of the album’s tracks.