composed to, usually, underlie the visuals in a motion picture
. Essentially, the purpose of film score is to aid the visuals and timing in the manipulation
, guidance, or misdirection
of the audience. The best scores act in seamless, barely-noticeable cohesion
with a film
Often referred to, slightly inaccurately, as a film's "soundtrack," that being the overall aural mix or, at worst and most commercial, the pop songs used within a given film.