Tritonus

Tritonus was a German progressive rock band, active from 1972 to 1979 and 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.