This movie is a perfect example of idiot plotting: everyone acts like an idiot and the entire plot is motivated because no one ever bothers to ask why a particular individual is doing so.
In this case, the entire plot is actuated by the fact that the Dodd family (Hank Williams Jr. and Ed Begley Senior and, somehow, the very Black D'Urville Martin) are in desperate need of money because the younger one has been singing in public, causing the older one to have a heart attack; hospitals are not cheap. So, of course, to raise the money, he sings some more, and a hullabaloo ensues. No one ever thinks to ask why it upsets Begley, and it takes the first hour of the movie before it comes out.
A good deal of behind-the-camera talent goes into this movie, but that doesn't do much for the proceedings. Of course, Hank Williams Jr. sings fairly often, and that is worth something. But you could toss the rest of the movie and improve it greatly.