Before Phil Spector built his Wall of Sound, before Abbey Road's famous echo chambers, there was Bill Putnam Sr. tinkering with concrete pipes and bathroom tiles in a converted garage studio. This is the story of how Universal Recording's makeshift echo chambers accidentally created the lush, dreamy sound that would define everything from doo-wop to psychedelic rock. Hosted by Simplecast, an AdsWizz company. See https://pcm.adswizz.com

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