The sound was introduced with Microsoft Windows XP in 2001, playing automatically as the operating system finished loading. Unlike the short beeps of earlier computers, it was designed as a brief musical welcome, and it quickly became one of the most recognisable sounds of the early internet era. As XP remained in use for many years, the chime embedded itself in popular memory through classrooms, offices and home PCs. Today it survives mainly through nostalgia content, retro tech videos and memes, where it instantly signals the early 2000s.