The study discusses the biography of the founder of Fluxus, Jurgis Mačiūnas, and looks at his artistic path. It includes texts by Jonas Mekas from the film Zefiro Torna, dedicated to J. Mačiūnas. Laima Laučkaitė describes the Fluxus leader's journey from Lithuania to the United States, his ideological programme and the nature of his creative activity. The Fluxus movement emerged as the opposite of the 1960s. The Fluxus Movement was a change from the 1960s to the 1960s in American art. Mačiūnas looked ironically at art that had been invaded by banal popular culture. He presented the principles of Fluxus in manifestos in which he defined the idea of anti-art. In 1978, Mačiūnas identified four features of Fluxus: concretism, functionalism, humour and monomorphism. He organised concerts and performances, created posters and programmes, organised performances and corresponded with artists. To promote the movement, he created and published Fluxus publications. In the 1980s, the Fluxus Foundation launched a series of publications and publications. The political and cultural situation changed and new trends in art emerged, but the Fluxus leader continued his activities, trying to turn various aspects of life into art. He was a collector, collecting banal objects. His personal life became the material for Fluxus happenings. What is Mačiūnas' contribution to Western art? He influenced a new wave of Western art that radically changed its expression and values. Modernist formal aesthetics were replaced by conceptual art, new spheres of artistic expression and the aesthetics of multiplicity. It taught us to perceive the importance of insignificant things. Vytautas Landsbergis discusses the content of his correspondence with Mačiūnas in the publication and defines the folk conceptualism characteristic of his work, which has its roots in folk art and the conceptual work of John Cage.