The Killer Angels was actually made into a film called Gettysburg, starring Jeff Daniels, which released a number of soundtracks. The first album, Gettysburg, was the music from the original soundtrack by Randy Edelburg. The second one, More Songs and Music from Gettysburg, included tracks by Edelburg and songs dating back to the Civil War period, including the "Bonnie Blue Flag," "Dixie," "Amazing Grace," and "Yankee Doodle." John Durant and Sandy Mitchell play American folk tunes, such as "Do They Miss Me at Home," and the American Brass Band, under the direction of John Hannan, plays more patriotic songs, such as "Bonnie Blue Flag," a Confederate marching song.
The rest of the soundtrack can be viewed by clicking on the link below. The album can be listened to on Amazon.