Industrial music is a style of experimental music that draws on transgressive and provocative themes. The term was coined in the mid-1970s with the founding of Industrial Records by the band Throbbing Gristle, and the creation of the slogan “industrial music for industrial people”. In general, the style is harsh and challenging. The Allmusic website defines industrial as the “most abrasive and aggressive fusion of rock and electronic music”; “initially a blend of avant-garde electronics experiments (tape music, musique concrète, white noise, synthesizers, sequencers, etc.) and punk provocation”. The first industrial artists experimented with noise and aesthetically controversial topics, musically and visually, such as fascism, serial killers and the occult. Their production was not limited to music, but included mail art, performance art, installation pieces and other art forms. Prominent industrial musicians include Throbbing Gristle, SPK, Boyd Rice, Cabaret Voltaire, and Z’EV. The precursors that influenced the development of the genre included acts such as electronic group Kraftwerk, experimental rock acts The Velvet Underground and Frank Zappa, psychedelic rock artists such as Jimi Hendrix, composers such as John Cage, writers such as William S. Burroughs, and philosophers such as Friedrich Nietzsche.