The article analyzes the problem of using theatrical activities in the process of forming musical culture of future specialists in preschool and primary education. The purpose of the publication is a comprehensive scientific analysis of the problem of using theatrical activities in the process of forming musical culture of future specialists in preschool and primary education. In particular, the importance of professional training of future specialists in preschool and primary education by means of theatrical activity has been determined. During the research, the following methods were used: theoretical ‒ analysis of regulatory documents and philosophical, psychological-pedagogical, cultural, methodological literature, as well as abstraction, systematization and generalization of data in order to determine the state and theoretically justify the investigated problem; empirical ‒ a role-projective method for studying and analyzing the results of theatrical activity. The significance and influence of theatrical activity on the development of a child’s personality, as well as the importance of preparing students to ensure the appropriate development of children of preschool and primary school age, are emphasized. Attention is focused on the importance of such a characteristic of theater art as the syntheticity (regarding different types of arts and the stage performance of an actor). The issue of forming musical culture of future preschool and primary education specialists by means of various forms and types of theatrical activity is highlighted. The main forms of organizing this process are lecture, practical and laboratory classes (in the disciplines “General pedagogy”, “Fundamentals of culture and speech techniques”, “Fundamentals of stage and screen art with teaching methods”, “Organization of theatrical activities in preschool education institutions”, “Methodology of music education”, “Theory and methods of conducting events and entertainment in PEI”, etc.) and extracurricular forms of students’ the atrical activities (theatre studio, theater circle, etc.). Mini-creative projects, which can be a component of control classes of any discipline or be used as an independent type of theatrical activity of extracurricular forms of work, are defined as important types of theatrical activity for the formation of future specialists’ musical culture.
 Keywords: formation of musical culture; future specialists of preschool and primary education; theatrical activity; children of preschool and primary school age; forms of work organization; professional training of specialists; types of musical activities; creative mini-projects.