Pittsburgh is the birthplace of radio, the location of many of radio's first and most influential stations and broadcast personalities, and a key market for the development of new formats. Pittsburghers' reaction to the music they heard on the radio helped to break records and create stars. Radio provided an unprecedented audience for live performances by local artists. After the big band era, radio gave voice to pop, rock and roll, and rhythm and blues. Pittsburgh's Golden Age of Radio celebrates the city's radio history, deejays, contests, concerts, public service, and promotions from radio's beginnings in the 1920s through the late 1970s, when listening on FM exceeded that on AM for the first time.