The term interculturalism has become an ongoing topic in society because the permeation of different cultures is no longer associated with a certain geographical area. So, interculturalism has emerged as a necessity in order to balance the differences in terms of tolerance and justice. According to the Croatian Music Curriculum of the subject Music Culture for primary and Music Art for secondary schools (MZO, 2019), one of the principles emphasised in the Curriculum is the principle of interculturalism, in terms of which the students shall sing the songs from different cultures, in different languages and dialects, with an adequate ethnomusicological approach, as well as to listen to and get acquainted with the traditional music of the geographically remote areas. This type of music teaching tends to develop student's understanding of culture and intercultural competences. Furthermore, a survey has been conducted within this paper to determine if the Music Culture teaching and extracurricular music activities in eastern Croatia are based on interculturalism. The survey has been conducted in general primary schools. In other words, the curriculum of the general primary schools was analysed and the Music Culture teachers was surveyed, as well (N=123). The results of the research showed scientific and professional contributions in the form of the acquisition of additional intercultural competences, so that intercultural teaching could develop and take place with the application of the principles of interculturalism, which is now legal. The obtained results can be an incentive for schools to invest in teaching, projects, materials, teachers and students in an integrated manner. Also, the results of the survey questionnaire and through the analysis of the school curriculum show the awareness of the existence of interculturalism, but also the need for additional efforts in order to be as successful as possible in its implementation. An insight into the teaching of Music Culture in primary general education schools and extracurricular musical activities gave a wider perspective from which openness towards interculturalism was evident, but also the awareness that there are many things that need to be worked on in order for the principle of interculturalism to fully take root in modern education. Given that very little research has been conducted in Croatia on this topic, the knowledge gained from this research will contribute to the further development of music pedagogy on this topic.