Music and language are two complex sistems. Through numerous studies, scientists have proved that there is a link between these two sistems and that music affects childrens speech and language development. By birth, every person has certain abilities to develop speech. When we speek, we say what we want, and sometimes, what we don't want to the people who surround us. Our environment is very important for our language development, because the more it is stimulating the better it is for our speech and language development. If the environment isn't stimulating enough, it is possible that the language will not be developed as it should be. Today we have more difficulties in children's speech and language development than it was before. Therefore it is very important to start the prevention on time, especially for the children who are in the risk of language difficulties. Accept the family, preschool also has a very strong and big impact on children's development. Trough the lifelong education, preschool teachers develop certain competencies which affect childrens overall growth and development. With these competencies preschool teachers can organise music activities for children which affect their speech and language development. Children have an innate instinct for music and singing and they won't say no to an offer to sing and dance from their preschool teacher. Children can enjoy in music and language trough nursery rhymes, spoken or singed counters, various games with singing and trough songs which are appropriate for them. Preschool teacher with certain competencies knows what will have a positive impact on children's speech and language development and therefore he needs to know what to offer to them. Every person who talks with the children becomes their speech model. Therefore we first need to ask ourselves are we ready to take that role. Everyday we are surrounded with music and language. In our home, on the street, in the store, it is around us. Children can hear good and bad examples of music and language on a daily basis. It is up to their environment to make a decision what will it offer to them.