Knížák was a cultural provocateur, and leading protagonist in the Eastern European arm of Fluxus, organising various events (his role as post-Communist cultural functionary has been controversial for different reasons). The (untutored) musical aspect of his career is also significant. Vautier and Higgins took part in the first Prague Fluxus concert, coordinated by Knížák. Maciunas, a significant ally, promoted him as director of Fluxus East, and tried hard to get him over to the U.S. (the visa took 3 years to be approved), where Kaprow was a correspondent.