Introduced with Microsoft Windows XP in 2001, this startup chime played every time millions of home and school computers booted up, making it one of the most recognisable sounds of the early internet era. As XP was gradually replaced, the clip lived on in nostalgia videos, retro tech channels and meme edits, where a few seconds of audio instantly signals the 2000s. It remains popular because it is short, instantly familiar and emotionally tied to a time when personal computing became mainstream.