Music is present in the daily lives of children and thus has a great influence on their development. The paper discusses the impact of musical activities on the overall development of preschool children. For this purpose, music activities and their impact on individual areas of development are explained. The child first encounters music in a "passive way" and later gradually begins to actively participate in musical activities. Musical activities such as singing, playing, music - moving games and listening to music are the main means of music education and they affect children's development. They should be part of everyday life in preschools. Through musical activities, children develop all areas of development, for example, music affects the enrichment of vocabulary, expression of feelings, development of concentration, better memory, fine motor skills and hand-eye coordination. The importance of music for children and the role of educators are also emphasized. Today, most children spend most of the day in kindergarten. It is for this reason that educators have a very important role in the child's musical development - they must be additionally engaged, organized, and know how to properly allocate their time. It is the educator who should provide the child with a quality musical environment in kindergarten and quality music activities through which the child develops his musical taste and interest. Examples of music activities that can influence certain areas of development are also listed in this paper.