The National Broadcasting Company

During the war, m b c added a fourth chime to covertly notify announcers that an breaking news was imminent. When it rings, all of us at nbc spring into action, wherever we may be. This sound has been with us for 90 years. It started as a sound that just fixed a small problem, but has become something completely ingrained in our culture. 20 thousand hurts is produced out of studios by defacto sound design team dedicated to making television and game show sound incredible. We'd love to get your feedback about future episodes - go to 20 kitesurfing.org/20katesurf or email editorial@mailonline.co.uk.