The biggest collection of Texas musicians onscreen is in, of all things, a Christmas movie. Set in Austin and starring Harry Connick Jr., the cast of "When Angels Sing" includes Willie Nelson, Lyle Lovett, Kris Kristofferson, Sarah Hickman, Ray Benson, Marcia Ball, the Trishas, Guy Forsyth, Joel Guzman, Dale Watson, Kat Edmonson, Miss Lavelle , Eloise DeJoria and others.