I found the father-son estrangement contrived along conventional religion vs the devil lines, but moving nonetheless. I had forgotten what a good piano player Nat Cole was. Ertha Kitt is the heart of the film. She acts as she sings -- biting, precise, and all-knowing. I think the great Pearl Bailey is wasted here -- wonderful as the Aunt, but we only hear her singing a snippet of the title song. Cab Calloway was also much more talented than permitted to be here. I saw him as "Sportin' Live" in the post-WW II revival of "Porgy and Bess." We get a too brief taste of the great clarinet player, Barney Bigard, and an anachronistic appearance by Ella Fitzgerald singing "Beale St. Blues." The film provides a good definition of the blues as an authentic American musical and poetic form. This one, almost 50 years old now, has aged well. It makes one regret that more African-American based and performed films were not made when these great stars were available. Thanks again, TCM!