Movie veterans Kathy Baker and Charles Dutton have joined the cast of the upcoming Allman Brothers biopic, Midnight Rider. The Saving Mr. Banks star will portray the Allmans' mother, while Alien actor Dutton has been slated to play Gregg Allman's best friend, confidant and assistant Chank Middleton. The duo joins a cast that includes William Hurt and Tyson Ritter as the older and younger Gregg, Wyatt Russell as his brother Duane, Eliza Dushku, Bradley Whitford, Joel David Moore and Zoey Deutch. Director Randall Miller tells WENN, "This cast is a dream come true." The film, based on Gregg Allman's New York Times bestselling biography My Cross To Bear, will start shooting in Savannah, Georgia later this month (Feb14).