First Pre-recorded Radio Broadcast, Bing Crosby and Magnetic Tape
Bing Crosby is approached by engineers from AMPEX who successfully market magnetic tape as a way to record, and splice segments of radio performance to create pre-recorded versions of what had typically been broadcast live.
Ford, Paul. "How Bing Crosby and the Nazis Helped to Create Silicon Valley - The New Yorker." The New Yorker. May 8, 2013. Accessed December 3, 2015. http://www.newyorker.com/tech/elements/how-bing-crosby-and-the-nazis-helped-to-create-silicon-valley.