My pick would be PRETTYBELLE.
PRETTYBELLE opened in Boston in 1971 with a Jule Styne/Bob Merrill score.
Angela Lansbury played a troubled housewife in the Deep South whose redneck husband locked her up in a mental instituion.
Lansbury received rave notices (as always) but critics panned the show (subject matter bothered a lot of them) and it closed out of town.
It has been recorded on CD; I do not know if it is still available.
My PRETTYBELLE personal highlight: Lansbury singing "You Never Looked Better" to dead husband at his funeral.
"I say YOU'RE the CUTEST one. No, I say YOU'RE the CUTEST One. And we go on like that from dawn to three."