Thirty-some odd years ago Frederick Fennell, the Eastman Wind Ensemble and some other folks put out a couple of LP sets of Civil War songs, fife tunes and band music (on period brass, woodwind and percussion instruments). I've no idea if there's a CD reissue, but if so, the music would be great. Unfortunately, cannon and small arms fire sounds generally don't do well in digital remastering. On those LPs, they were devastatingly realistic. They used period weapons for the gunnery, but I couldn't vouch for the authenticity of the gunpowder formulations, loads or projectiles (if any).