If you are a Civil War buff like I am, you can buy VHS tapes of the last gatherings of the men in BLUE AND GRAY. I have one, plus a wonderful recording (double album) of their music of the time. Believe it was released by Columbis Records years ago, and probably available through researching some sources. If interested, I have an old brochure that came with the tape. Send me a message, and I will respond.
What does it for the South? Is it that they were broken by the Civil War and developed the "Stockholm syndrome"? Is loyalty for institutions an inherit trait of Southern society but after the Civil War this trait was applied to the Union out of default i.e. Southerners have a need to be loyal and patriotic and they had no nation to be patriotic about but to the one that conquered them??
When I was a kid, my parents had a double album called "Songs of the Blue and the Gray," IIRC.
I remember the album with the Union songs had a blue label, and the album with Confederate songs had a gray label.
Maybe that was the same album you have. It had to have come out in the early 1960s, at the latest.