The Stax Records legend who wrote such classics as "Knock on Wood," "634-5789," Ninety-Nine and a Half,\u201d \u201cRaise Your Hand,\u201d \u201cBig Bird,\u201d \u201cI\u2019ve Never Found a Girl\u201d and \u201cCalifornia Girl\u201d talks about his influences, the stories behind his classic songs, and his surprising hand in the Lynyrd Skynyrd's early career.