The field of musicology, called musical folklore (ethnomusicology), is increasingly aware of itself as an independent musicological science with its own object and subject, tasks and research methods. Folklorist musicologists have accumulated a huge amount of factual material that is waiting for its scientific and artistic understanding. It is clear that the development of musical folklore cannot be successful without intensive theoretical work, without mutual exchange of experience, without familiarizing the scientific community with the achievements of domestic and foreign scientists. And for this, constant and timely publication of new interesting works should be established. Therefore, the Folklore Commission of the Union of Composers begins the systematic publication of collections of articles on musical folklore.