ENThe article discusses the part of the oeuvre of Vidmantas Bartulis (1954-2020), one of the most renowned representatives of the new trend of Romanticism in Lithuania, which is characterized by its unique performativity. Attention is drawn to the playful treatment of serious themes in his music. The historical context is revealed and the ideological impetus of the works of Jurgis Mačiūnas, the pioneer of the Fluxus movement, on the composer is researched. Bartulis' experience as a composer for theatre performances, as well as his approach to the formation of musical texture as a theatre director, are presented. The variety of the possibilities provided by this genre is discussed, and the most significant works are presented. The polysemic perception of such works and the democratic nature of the language of music are emphasized. Keywords: Bartulis, Mačiūnas, performances, extended communication. [From the publication]