The sound was introduced with Microsoft Windows XP, released in 2001, and played when users signed in to the operating system. As Windows XP became one of the most widely used versions of Windows in homes, schools and offices during the 2000s, the short chime became familiar to millions of people around the world. Years after support for the system ended, clips of the sound spread through YouTube, TikTok and meme pages as shorthand for early-2000s computing. It remains popular today because it is short, instantly recognisable and tied to a shared era of personal computers.