After the originally conventional cabaret group Floh de Cologne experienced underground bands like the
Mothers of Invention,
the Fugs, and the
Edgar Broughton Band at the Essen Song Days in 1968 – where the group itself performed two special programs – they stylistically reoriented themselves with their
7. Programm, combining agitational texts with beat music and a stage show to create so-called "agitation revues" and developing into one of the leading political rock bands. In 1970, Floh de Cologne signed an exclusive record deal with the label
Ohr/Metronome for the production
Fließbandbabys-Beatshow and other releases. Metronome producer Rolf-Ulrich Kaiser was instrumental in the development of the so-called Krautrock scene of those years. In 1971, Floh de Cologne created
Profitgeier, the first German-language
rock opera. In the three-movement
Geyer Symphony of 1973, the band incorporated original excerpts from political speeches given at the funeral of the German industrialist
Friedrich Flick into their music. With the cantata for rock band
Mumien" (Mummies), the band responded to the 1973 coup in Chile, including a musical setting of the last speech by the ousted president
Salvador Allende. That same year, the group collaborated with
Hans Werner Henze on alternative settings of the Chilean anthem (
Dieser chilenische Sommer war süß; 1974), with lyrics by Rudi Bergmann (born 1950). The premiere took place on May 31, 1974, in Essen (
Grugahalle:
memorial concert for
Víctor Jara, also a solidarity event for the resistance in Chile). Their collaboration with
Mauricio Kagel at the "Cologne Courses for Political Music" (1975) also transcended national borders. In the rock opera
Koslowsky, for which the band had researched on location for a year, Floh de Cologne traced the fate of a worker from the
Ruhr area who comes to Bavaria to work at the
Maxhütte steelworks in 1980. == Theater ==