Bhaktin's theory of polytonation and revelry was an important concept in music theory. It mainly focused on the interaction between different instruments or singers in music, as well as the changes and movements in music. Polytonation referred to the fact that multiple instruments or singers played or sang in the same song in coordination with each other to complete a complete musical work. In Bachtin's theory, polytonation was a basic element in the structure of music. Through polytonation, one could create a rich and harmonious sound effect, and at the same time, it could also make the audience have a strong emotional resonance. The party theory emphasized the changes in rhythm, intensity, and speed in music, as well as the interaction between the theme in music. In Bachtin's theory, revelry was a strong dynamic and change in music, which could create a lively and exciting musical atmosphere. Bachtin's theory of polytonation and revelry were both important concepts in music theory, which focused on the interaction and changes between different elements in music and provided an important theoretical basis for music creation and appreciation.