In music, a score is the notation detailing the all the composer’s specified instruments and their parts, compiled into a single volume. When the music has been composed specifically for a film, the word "Original" often precedes the word "Score", indicating that this work is new music created for a particular film.

An example is the incidental music for the first Star Wars film (later rebranded as Episode IV: A New Hope). Under the iconic typeface/name we read: "Original Soundtrack Composed and Conducted by John Williams, Performed by the London Symphony Orchestra".

Although often performed by traditional orchestra of various sizes, this is not always the case. One of the most successful and well-loved OSTs (Original Soundtracks) is that for Ridley Scott’s legendary sci-fi film Bladerunner. The largely synthesised score was composed and performed by Greek musician Vangelis and has become an iconic album.

Famous names associated with film scores include Elmer Bernstein, Ennio Morricone, Maurice Jarre, and Danny Elfman.