The tone comes from the MSN era of the early 2000s, when Microsoft's Messenger and mobile services were a central part of online chatting between 2002 and 2005. As those platforms faded and smartphones introduced new default alerts, the sound survived in archives, ringtones and soundboards shared by users who grew up with it. It now circulates mainly as a nostalgia cue in edits and memes, instantly marking a scene as pre-smartphone internet culture, which is why the discord notification and similar chat alerts are often used alongside it in videos.