My friend Bobby Horton is a fellow War Between the States enthusiast whose music was featured on the Ken Burns series. Bobby has probably a dozen albums currently out featuring music of Union and Confederate soldiers. He also is selling videos of a ETV documentary entitled *BOBBY HORTON: MUSIC AND MEMORIES OF THE CIVIL WAR*, which features 63 minutes worth of authentic music from the period. Check
By the way--I'm the narrator on the video.