If you see the film that the show is based upon you could then ask yourself something that the creative staff seemed not to have asked themselves.
"What do these people have to sing about?"
And the answer is nothing. This set of characters is as 'tone-deaf' as they come.
The other thing the creatives did not ask was--
"How can we tell this story better?"
They couldn't.
"If my life weren't funny, it would just be true. And that would be unacceptable."
--Carrie Fisher