The NBC Chimes: How three notes made history

The NBC chimes represent a landmark in audio branding, evolving from a functional tool for radio identification into the first officially registered audio trademark in the United States. Originally a seven-note sequence played live on hand chimes, the melody was condensed to three notes—GEC—to ensure consistency and mitigate technical noise during studio transitions. Beyond branding, the chimes served as a critical communication system during World War II, where a secret fourth note signaled imminent breaking news to radio stations nationwide. Radio historian John Schneider and former NBC employee Rick Greenhut detail how this simple sonic signature became deeply ingrained in American culture, bridging the gap between early mass communication and modern media identity. Even after the radio network's dissolution, the chimes remain a powerful, enduring symbol of broadcasting history.