Numerous studies confirm that a harmonious and overall development of a child requires a stimulating and content-rich environment. The child develops in interaction with environment. Speech and language are part of a child’s development whose predispositions for progress are innate. In order for a language to develop, it needs to be encouraged. Research shows that today there is an increasing number of children with many difficulties in language development, so the educational process needs to be further enriched. This paper theoretically investigates child language development and the impact of music on it, but also on other areas of development so that the child can be approached holistically. Music affects the physiological functions of the child, motor development, socio-emotional development, cognitive development. The paper presents child language development according to periods. The paper emphasizes the importance of a stimulating environment for the overall development of the child, and thus the development of speech and language. Music and speech are closely connected by their elements. The paper describes the possibilities of encouraging child language development through music and gives possible examples of musical activities to encourage child language development.