soundtrack /ˈsaʊndˌtɹæk/noun 5verb 1forms 3 noun5 •The sound (especially the music) component of a movie, video game, etc. •A recording or compilation of recordings of such music for sale. •A background sound that is part of a larger event. •Popular music associated with a particular historical era or time of one's life, especially nostalgically.But in my young mind, nothing was haphazard, and certain songs that came over the car radio became fundamental parts of the resonating soundtrack of my youth. — 2026 •A narrow strip running down a movie film that carries the recorded sound in synchronization with the pictures. verb1 •To provide, or to act as, the sound or music component of a film.The world, in turn, watched, clicked, cried, danced, sang along, swooned, caravanned to stadiums and movie theaters, let her work soundtrack their lives. — 2023 formssoundtracked · soundtracking · soundtracks