Discord launched in 2015 as a voice and text app for gaming communities, and its short message alert quickly became one of the most recognised sounds online. As streamers, YouTubers and TikTok creators shared gameplay and chat reactions, the chime moved beyond the app itself and into edits, memes and comedy sketches. Today it works as instant shorthand for a new message, a reply or someone trying to get attention, because almost anyone who watches online video has heard it while using Discord or watching a stream.