Shafeta V. Evolution of collective bayan-accordion performance of Lviv region in the context of musical national traditions of Ukraine of the XX century.

The dissertation systematizes the ensemble and orchestral art of Lviv region with the participation of bayan-accordion as a priority aspect of popularization of the phenomenon in the musical culture of Ukraine. The scientific component is substantiated and the evolutionary periodization of the object of study. Peculiarities of forming the principles of collective music making are determined with the participation of bayan-accordion in Lviv region from the standpoint of concert practice. The basic centers are educational institutions of Lviv and Drohobych, and therefore, centers of cultural and artistic life of Lviv, Drohobych, Truskavets, Stryi, etc., in which we observe diversity ensembles and orchestras of diverse performances. Collective in the region are classified on the principle of educational activities (in the field of professionalization of folk instrumental education), professional ensembles and orchestras, by the criterion of functioning of ensembles of folk, variety and amateur types. The significance and influence of the festival-competition movement of Lviv region are revealed to popularize the phenomenon in Ukraine and abroad and recognition of the activities of collective and organizers of the artistic community of the world. The work is proposed compositional work of representatives of Lviv region (A. Onufrienko, E. Mantulev, K. Sokolov, V. Chumak, Y. Polevoy, J. Oleksiv, R. Stakhniv, I. Onysiv, etc.) for groups with bayan-accordion composition, as a spectrum of formation of performing arts (works for homogeneous ensembles; for academic, folklore, folklore and academic, folk-variety mixed ensembles; orchestral compositions) and their contribution is determined in providing didactic repertoire. Brought the importance of scientific and methodological work specialists of Lviv region of the outlined direction as a significant professional basis in the context of national heritage.