I'm a huge David Hood (and the Swampers) fanboy, so many of those sides are etched in my memory.
My favorite Muscle Shoals story:
Paul Simon had heard The Staples 'I'll Take You There' and loved it, and wanted his manager to go find the reggae band that cut the album with Pops and the girls. After a few calls, he has to tell Paul, 'they're not Jamaicans, they're four rednecks from Alabama'!