They may be the most familiar three-notes to generations of Americans—the NBC chimes hit the notes G-E-C. But there is a long-forgotten part of the history of NBC—the fourth chime. The background goes ...

NBC’s iconic Peacock and three-note chimes have been given an on-air makeover. The network has dusted off the chimes — which never really went away but weren’t being actively used — and is now playing ...