BGM, or Background Music, refers to the music that plays in the background of various media, such as films, video games, and advertisements. Its primary purpose is to enhance the emotional experience of the audience without distracting from the main content. BGM can set the mood, create tension, or evoke specific feelings, making it an essential element in storytelling. In the context of film, BGM is often composed to match the themes and scenes, helping to guide the viewer's emotional response. Similarly, in video games, BGM can adapt to gameplay, providing an immersive experience that keeps players engaged.