MUSCLE SHOALS, ALABAMA . . . Since the 1960s, the city has been known for music developing the "Muscle Shoals Sound", as local recording studios (including FAME Studios in the late 1950s and Muscle Shoals Sound Studio in 1969) produced hit records that shaped the history of popular music. This tribute to THOSE songs and THAT history reigns supreme with some of the most popular and influential artists participating in music history today. From Chris Stapleton, Willie Nelson, Lee Ann Womack and Jamey Johnson, to Demi Lovato, Steven Tyler, Keb Mo, Grace Potter and Aloe Blacc, an absolute cavalcade of stars lend their own personal embellishment to these classic songs.