The article is devoted to the analysis of scientific works of the well-known in the Ukrainian diaspora musicologist and publicist Myron Fedoriv in the context of preservation of the national song traditions outside ethnic territory. It provides information about the most important theoretical achievements of the scientist in the field of musicology, and defines the place and significance of activity of the cultural public figure and scientist in the history of musical and choral culture of

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... ne and the western diaspora. The aim of the article is the analysis of Myron Fedoriv's musicological heritage in the context of conservation problems of the national song and choral tradition in the cultural environment of the Ukrainian emigration. Research methods аrе based on biographical, culturological, and musicological approaches, with the help of which theoretical analysis, synthesis and systematization of data from archival sources and literature were carried out within the framework of the research problem, as an evidence base for solving the goal Results. Myron Fedorіv is a Ukrainian composer, publicist and musicologist who lived in the United States most of his life. He left a large amount of musical material and theoretical works in the history of Ukrainian choral culture, so he stopped the destruction of song traditions and samples of canonical liturgical singing in the Ukrainian churches in the diaspora. In his works, M. Fedorіv wrote that the singing tradition is the basis of the Ukrainian national spiritual culture, and therefore it should be preserved in the Ukrainian Catholic Church in America. As a result, the musicological heritage of M. Fedoriv is very valuable for the history of the Ukrainian musical culture of the twentieth century. M. Fedoriv was the guardian of the traditions of Ukrainian song culture and choral music in the art of the Ukrainian diaspora in the United States. Thus, his activity deserves a more detailed study. Novelty. For the first time scientific musicological works by M. Fedoriv are presented as a theoretical and methodological basis in the process of preserving the national singing traditions in the Ukrainian Western Diaspora.