This graduation thesis presents musical-scenic creativity in the lower grades of primary school; in effect, the musical-scenic form of a musical in theoretical and practical aspects. The musical is theoretically presented in all its components, and practically proven by staging a children's musical in a primary school located in Belgium. The first part of the paper discusses the musical as a musical-scenic genre. It describes the origin of the musical through history, its development, and the varying types that have evolved. The elements of how the musical is made are also presented in detail. It is chronologically guided through periods of development and performance, both in Croatia and across the world. The connection between the child and music from conception to early school age is explored. The child's exposure to music, reaction to music, musical maturation, and musical abilities development are explained. The curriculum of the subject of Music Culture from the first to the third grade has been analyzed, and the influence of the teaching of music culture in students was noticed. Extracurricular and out-of-school activities follow this and the most important extracurricular activity (for this thesis) – musical creativity. The children's musical is presented as an extracurricular activity, and the process of creating a musical through all the stages of its setup is presented in detail. The empirical part of the paper describes the research conducted at the ISF International School in Belgium. The subject of research is a school project, the musical Zoom! performed by lower elementary school students. The research shows that a children's musical performance in primary school could be realized at a high level by students who have had no prior higher musical education, and where music and performing arts are not a primary source of interest for all students.