Do you like bass? Well, so did Carol Kaye, one of the dozens of legendary session musicians we'll be profiling on today's episode, where we explain the hidden histories behind the following squads of hired-gun studio instrumentalists: (1) The Wrecking Crew; (2) The Nashville A-Team; (3) The Funk Brothers; (4) The Muscle Shoals Rhythm Section. Featuring music from The Association, Roy Orbison, The Gants, and more.