Film score staples are musical pieces that are used as a recurring THEME in a film or television series. They are often composed to evoke a certain emotion or atmosphere and can be used to signify the beginning or end of a scene. The term 'film score staple' is derived from the fact that these pieces are often used multiple times throughout a film or series. They are an important part of the overall soundtrack and can help to create a sense of continuity and familiarity for viewers.