Teaching that gives students a wide range of opportunities to achieve a better understanding of teaching content and access to teaching content from a broader perspective is integrated (interdisciplinary) teaching. Such a modern educational approach becomes a requirement for teaching each individual subject. Music teaching provides a multitude of opportunities for interdisciplinary connections that are achievable in the primary education, but also in the subject teaching of Music Culture. As part of this paper, a study was conducted on a sample of 67 primary school teachers and subject teachers of Music Culture in the area of Vukovar-Srijem County, Osijek-Baranja County and Virovitica-Podravina County. An anonymous questionnaire examined the opinions of teachers on the implementation of interdisciplinary connections between Music Culture and other subjects in primary school and determined the extent to which the connection between Music Culture and other subjects in primary school is carried out. The results showed that Music Culture subject teachers and primary education teachers implement interdisciplinary connections between Music Culture and other subjects to a significant extent, most of them doing so at least once a week using different types of music. The connection is carried out equally in all classes and with a large number of subjects, and the emphasis is on listening, singing and musical games / movement and dancing to music. Also, the connection is carried out equally during all parts of the lesson and serves as a motivation, for a better understanding of the content, a means of relaxation etc. Teachers are of the opinion that the interdisciplinary connection of Music Culture and other subjects has a positive effect on student motivation, they think it makes teaching more interesting, not demanding to perform, that it can be conducted in different ways, reduces stress in students, encourages their creativity and facilitates knowledge transfer. It is expected that the findings of this research will contribute to the progress in planning and implementing the interdisciplinary connection of Music Culture and other subjects in primary school.