Extracurricular activities are an integral part of the entire structure of the educational work of the school and include all the contents and forms of educational work of professionals. A school is an institution of work, but it also needs to be the place that gives the children an opportunity to play, to enjoy, and especially to expand their horizons and to acquire skills based on their preferences and interests in their free time. The main goal of extracurricular activities is to use students’ free time wisely. Therefore, the emphasis in this master’s thesis will be on the leaders of those extracurricular musical activities. Extracurricular activities can provide a variety of opportunities for student’s growth and development. Therefore, the leaders of such activities should offer various facilities so that students have the opportunity to choose the activity they want to participate in and with that express their identity. The role of the leader is to plan, organize, listen to student's wishes, accept the proposals, motivate and advise them, systematically encourage, inspire and provide students to express themselves and their abilities. Extracurricular musical activities include vocal, instrumental and a combination of vocal and instrumental music making as well as dancing and other various forms of music-making. Due to the variety of interest areas, the leaders of such activities have an absolute freedom in showing their creativity and enthusiasm. Quality organization with students to develop musical skills, aesthetic features music because without a sense of beauty child's life becomes monotonous. Furthermore, cultural awareness, contributing to the development of children's creative thinking and creative children are more successful children. Also, contributing to emotional development and psychosocial growth because they stimulate the sense of cooperation and support. Developing self-confidence and self-esteem, and confident children can more easily make decisions, a failure for them is not a problem, but encourages the solution, easier to establish relationships and gain friendship. In the way of sometimes standing content and organizational problems such as inadequate space, the lack of material and technical support. Extracurricular musical activities can contribute to the reputation of the school and community cultural activities, so it is important to encourage the community to cooperate in finding a solution for the best possible realization of extracurricular activities.