Everyone loves cover songs. And a great cover often makes a song stronger. Why is that? Author Ray Padgett, of the website www.covermesongs.com, lets us in on the origins of classic covers — and tells the larger story of how cover songs have evolved over the decades.

The Beatles made “Twist and Shout” famous, but who did it first? Where did the Righteous Brothers "Unchained Melody" come from? Aretha Franklin demanded “Respect,” Patti Smith blew up "Gloria," DEVO deconstructed "Satisfaction," and Talking Heads recast Al Green's "Take Me To The River." Hear more from Ray in this episode!