The name combines the initials FD with the German word Rundenjingle, meaning a jingle for a round, which points to its role as a short cue for game play rather than a song or spoken clip. Short round jingles like this are widely shared on soundboards because they are easy to recognise and reuse across different games, quizzes and streams. Creators keep using it because the brief, upbeat cue clearly separates one round from the next, adds a light game-show feel, and works without any explanation.