A Swamper Coming Down to the Bayou: Jimmy Johnson, Muscle Shoals Rhythm Section, July 2nd at Ocean Springs LIVE! Jimmy Johnson is one of the most influential session guitar players and record producers/engineers in pop music history. He will be gracing the Ocean Springs LIVE stage this Saturday, July 2nd. You may have heard of Lynyrd Skynyrd's song Sweet Home Alabama - "In Muscle Shoals they've got the Swampers, and they've been known to pick a song or two...Yes they do!" .