Other forms: soundtracks
A soundtrack is all the music written for and heard in a film. The film soundtrack, buy the soundtrack, a soundtrack album.
Strictly the score is the music composed for the film and the soundtrack is everything on the audio, but the words are used interchangeably. Soundtrack albums often outsell the film's takings. Figuratively, a soundtrack is the music associated with a period of your life: the soundtrack to my twenties. Note that the word comes from the physical strip of sound alongside the picture on a reel of film.
1nounsoundtrackThe music written for and heard in a film.
“The film's soundtrack, full of old jazz songs, became a bestseller.”
synonyms: score
2nounassociatedThe music associated with a period of life.
“Those four albums are the soundtrack to about a decade.”
soundtrack is film music.
Also accepted in games: score
From sound + track.
Etymology from Wiktionary, CC BY-SA