The purpose of this study was to examine the impact of music on the emotional perception of films by analysing how musical compositions affect the emotional reactions of viewers while watching a film. The research methodology involved selecting films to analyse the musical accompaniment and studying the influence of music on the viewer’s perception of specific plots. The research findings proved that music is an essential component of cinematic art that can enhance the emotional impact of films on viewers. Music is a powerful tool to further influence the viewer and convey certain ideas in the film. The functions of music in cinema are diverse: from emphasising the film’s atmosphere to an integral soundtrack consisting of noises and various sounds, without musical instruments. The analysis of the Harry Potter film highlighted the significance of music in creating the atmosphere of the wizarding world. The role of music in cinema transcends merely accompanying the image. It is a multifaceted means of expression that can change the perception of a scene, emphasise key moments, and even shape the emotional mood of the entire film. A vital part of a successful musical score is close cooperation between the composer and the director. They collaborate to ensure that the music not only complements the visuals but also integrates into the overall concept of the film, enhancing its emotional and narrative impact. With a soundtrack, or simply an integral tone series, the semantic horizons in films are expanded, ensuring a more profound emotional and narrative effect