The tada chime comes from Windows 3.1, where it served as a short system sound for successful actions on early personal computers. As those machines became common in homes and offices, the bright fanfare became widely recognisable, even for people who never consciously noticed it at the time. Later, video editors revived it as shorthand for old-school computing, and it spread through memes, reaction videos and edits that needed an instant, light-hearted success signal without words.