The aim of this paper is to point out how music affects the general development of the child, how it affects children's speech, cognitive, social and emotional, and motor development, as well as how it affects children with developmental disabilities. Various studies have shown that music can have both positive and negative effects on a child's development, and so, music can develop a child's speech complexity, expand his vocabulary and prolong his concentration. Since birth, children learn about rhythm through lullabies, finger games, first steps, first words, various movement games and counters related to movement, and this is important because musical games develop motor skills, encourage the development of speech and balance centers, develop creativity in children, etc. Motor skills, such as coordination, balance, precision, speed, etc. are very important for the child and it is important for the child to develop from an early age, and it can be stimulated by rhythmic synchronization. Also, learning to play an instrument can positively affect an individual's intelligence and can develop social skills, love for music, self-confidence, discipline, etc. It is very important to implement music education in school as well, because it brings with it various benefits such as encouraging creativity, helping to calm students, reducing stress, etc. In this paper i will also say something about listening to music, as one of the most important musical activities that can be carried out in working with children of early and preschool age. Listening to music encourages children to move, to dance, but also to sing, which affects the emotional and social development of the child.