Through this project, we are going to devoleped desimination part of Erasmus + KA1 teachers mobility Serbia to Romenia. With the project, teachers are going to improve their teaching competences (didactic strategies, methodologies, music competences, resources) that devoleped on exchanging experiencies in a job shadowing period and now via eTwinning project. At the same time, students will improve their competences with their exchanges of information and sharing projects. The educational institutions are going to improve with all these exchanges. Our project will try to combine music with all subject. Our students will work on solving simple problems through music, and also see how music can help them. The project will last throughout the entire academic year, and students in schools will each month solve one problem, work on the results, and then divide the results into TwinSpace.