The title comes from the Chinese and Japanese word for a musical interlude, the instrumental passage that sits between sections of a song or performance. Short clips like this circulate on soundboards because they are easy to drop into edits without lyrics getting in the way. Creators tend to save them for transitions, intros, and reflective moments, where a neutral musical bridge is more useful than a dramatic effect. Its continued use comes from that flexibility, a brief, self-contained passage that can soften a cut without drawing attention to itself.