In this thesis, the influences, techniques and suggestions of musical activities that are used as part of the current preschool educational program and their impact on preschool children with developmental difficulties are considered. The purpose of writing this thesis is to find out the existing and propose future potential musical activities whose effect will have a positive effect on children with developmental disabilities. The research is carried out with the purpose of highlighting the most optimal existing method and identifying adequate innovative proposals for improving the existing offer of musical activities as part of the preschool educational program. Secondary data collection was used as a data collection method within this thesis. The mentioned method is used for the purpose of informing and reaching an adequate conclusion. The collected data is mostly presented in a qualitative form, with less availability and representation of quantitative data. As part of the conducted research, the author concluded that musical factors - tempo, rhythm, dynamics, melody and instruments, have a positive effect on the development of preschool children with developmental disabilities. It can also be concluded that the field of musical activities within preschool education would benefit through the use of innovative proposals of this thesis. The author's recommendation is to conduct further adequate analysis that would focus on quantitative as well as qualitative data regarding the impact of music on preschool children with developmental disabilities. The purpose of the analysis would be to establish further conclusions with more precise statistical features - reduction of the standard deviation of the data, increase in the accuracy of the average, clearly defined limits, ...