Tadeusz Kantor was a Polish painter, assemblage and Happenings artist, set designer and theatre director. Kantor is renowned for his revolutionary theatrical performances in Poland and abroad. Laureate of Witkacy Prize – Critics' Circle Award (1989).

A happening is a performance, event, or situation art, usually as performance art. The term was first used by Allan Kaprow during the 1950s to describe a range of art-related events.