Discord launched in 2015 as a voice and text platform for gaming communities, and its short join chime quickly became one of its most recognisable interface sounds. As streamers and creators began recording calls and sharing clips online, the sound travelled beyond the app itself and started appearing in YouTube videos, TikToks and reaction edits as shorthand for joining a conversation. It remains popular because it is instantly understood by Discord users and carries a friendly, low-key feeling that fits casual online humour.