The movie adaptations of stage musicals that I've seen, without exception, in my opinion don't work. A lot of people would disagree with me.
When the audience comes in, it changes the temperature of what you've written.
I really don't want to write a score until the whole show is cast and staged.
I chose and my world was shaken. So what? The choice may have been mistaken; the choosing was not. You have to move on.
Two of the hardest words in the language to rhyme are life and love. Of all words!
Musical comedies aren't written, they are rewritten.