Discord is a voice and text chat platform that became popular with gaming communities after its launch in 2015, and its voice-channel sounds quickly became familiar to streamers and viewers. The join chime is one of its built-in notification tones, heard whenever a user enters a voice channel. As Discord clips, gaming streams, and reaction videos spread online, editors began lifting the sound for their own videos, using it as shorthand for an arrival even outside the app. It remains popular because the tone is instantly recognisable to regular Discord users.