Jet Ferro was founded in 1975 by Knopp Ferro with his brother Rolf Hinterecker, as well as fellow artists and fellow students Fritz Esch and Michael Wolf in Cologne. At that time, the city vibrated with an atmosphere of awakening and upheaval. They satirized the rising pop and rock culture with its star cult and deliberately turned away from the emerging art market, which was primarily concerned with painting and sculpture...