The sound comes from Apple's iMovie, where trailer templates give home editors ready-made cinematic openings complete with music, titles and pacing. The studio trailer theme became a recognisable shorthand for that polished movie style, and clips of it spread through video edits, memes and social posts as creators reused the familiar fanfare outside the app itself. It remains popular because it instantly signals a trailer, turning a short clip into something that feels professionally staged without needing a full soundtrack.