I saw the original production of HALLELUJAH, BABY! with Uggams. I rather liked the show but it was confusing. Although the characters never aged, the era kept changing. If I'm not mistaken it started off on a plantation in the South during the Civil War and ended with a stunning integration ballet in present times. I can't recall too much more because it was so many years ago.
The score was (an is) marvelous.
"Long live God!" (GODSPELL)