The sound comes from Windows 11, Microsoft's operating system, where the Clock app plays a gentle alert when a set timer finishes. Its Russian title, 'Окончание таймера,' simply means the end of the timer. The chime spread online as creators reused familiar system sounds in short videos, using its calm, buzzer-like tone to signal deadlines, waiting and timed tasks. It remains popular because almost everyone recognises it instantly, making a routine notification feel funny or relatable in memes and edits.