Singer-songwriter Shelby Lynne will portray Johnny Cash's mother in the upcoming film Walk the Line. Now under production in the Memphis area, the film biography of Cash's early career stars Joaquin Phoenix as Cash and Reese Witherspoon as wife June Carter Cash. New artist Waylon Payne, a former member of Lynne's band, has been cast as Jerry Lee Lewis. Lynne has begun recording a new album in Los Angeles with producer John Porter. Mickey Raphael, Willie Nelson's longtime harmonica player, and Wallflowers guitarist Michael Ward will be featured on the project.