The dreaming harp has no single known source, which is part of why it travels so easily online. Short harp arpeggios have long been shorthand in cartoons and films for a character slipping into a daydream, and that association carried over to short-form video. Editors now reuse the same few seconds to flag a wish, a crush, a memory, or a fantasy cutaway without needing dialogue or explanation. Because the sound is instantly readable and emotionally soft, it keeps appearing in edits, memes, and reaction clips where a moment needs to feel tender rather than loud.