Microsoft released Windows XP in 2001, and its short startup chime quickly became one of the most recognisable sounds from early personal computing. The gentle melody played every time a computer booted, so millions of users heard it daily at home, at school and at work. Years later, creators began sharing louder, bass-boosted versions online as a nostalgic joke, using the familiar notes to open memes, reaction videos and retro edits. It still works because the sound instantly signals the early 2000s, even to people who never used XP themselves.