AOL became one of the most widely used internet services in the 1990s, and its instant messaging service made signing on and off a shared social ritual. The closing sound marked that moment, so it quickly became shorthand for leaving a chat, ending a session or disappearing online. As dial-up faded, the sound survived through nostalgia videos, reaction edits and retro internet compilations, where a single familiar sound can instantly place a scene in an earlier era of the web.