Tritonus

Tritonus was a German progressive rock band from active between 1972 and 1979 based in Mannheim. The band was founded by the synth player Peter K. Seiler, bassist Ronald Brand, and percussionist Charlie Jöst. Additionally, Seiler served as the band's manager. The band has been inspired by English progressive band Emerson, Lake and Palmer, complete with heavy use of keyboards and English vocals.