The culture of the environment in which we live is an indispensable part of every individual's life. Culture, customs and beliefs are part of tradition which every nation and every country has and it is precisely this culture that makes it recognizable among other countries and regions of the world. The concept that unites all of the concepts above (culture, customs and beliefs) is traditional heritage. Traditional heritage contains various values and elements that protect and proudly emphasize national identity, and precisely because of this it is an important part of the history of every nation. Traditional music is one of the elements of the rich traditional heritage that the Republic of Croatia has and is proud of, and with which it often stands out in the world. In order to preserve and strengthen national identity, traditional heritage and its elements are included in educational institutions and through the system of regular education in the Republic of Croatia are passed on to young people. The Republic of Croatia is divided into regions, each of which has characteristic customs and nurtures traditional music which is characteristic for that region. Tradition is taught through subjects in schools through the regular education system. Traditional music that is connected with certain customs of a certain region is the most represented in a subject called musical culture. Slavonia can boast about very rich traditional music and customs that are recognizable not only in the country, but also around the world. This master’s thesis examines and investigates the representation of traditional music and customs of Slavonia in the teaching of musical culture, as well as the way of conducting lessons in which the traditional heritage of Slavonia is discussed and learned.