Environment and relationship quality influence development and upbringing od the child. A family is any safe, developmentally stimulating, nurturing community in which a child has at least one adult with whom he or she can develop an intimate relationship of trust and secure attachment. Various studies confirm that the fetus in the mother’s womb responds to external sounds, and babies in the first week of life can even hear and differ pitch. Music is therefore an indispensable means of education whose purpose is to develop in children, among other things, a sense of beauty. In order for a child's development to be possible from an early age, the environment has a great influence and responsibility for the development of the child's musical abilities. The aim of this paper is to investigate the reactions of a ten-month-old child to the musical environment. Exploring musical instruments and spending time in a musically stimulating environment, the child experienced movement with music, explored and recognized voices, and explored sounds using instruments. All activities were organized in the form of play or spontaneously. While exploring the musical elements, the child felt the rhythm through play, which was manifested by clapping, shaking his head or body movements. When creating and performing music, researching instruments, the child reacted to different types of music and played simple instruments. Recent research makes it possible to research and monitor fetus development. The problem starts when it is necessary to find data on research in infancy, and not related to medical research devices of the modern age. By creating a rich and stimulating musical environment for one's own child, an attempt was made to analyze the child's behavior according to developmental characteristics, whether there is a deviation in behavior and whether the child's environment disturbs or enriches the child's everyday life.