Fanfares in film are short, powerful musical compositions that often signal the beginning of a movie or a significant scene. They typically feature brass instruments, creating a bold and triumphant sound. Famous examples include the iconic 20th Century Fox fanfare and John Williams's Star Wars theme, which set the tone for the films that follow. These musical introductions serve to capture the audience's attention and evoke emotions, enhancing the cinematic experience. Fanfares can also be associated with specific characters or themes, reinforcing their importance throughout the film. Overall, they play a crucial role in establishing the atmosphere and mood of a movie.