Answer: It was the show that completely changed the way musical theatre is staged. Oklahoma was a first and it has remained one of the greats since it burst onto Broadway in middle of WW2.
Explanation:
They have producers and directors that keep them on track about what happens in the movie and how they make it.
this is more of a personal question, i guess one example would be to study on the subject youre teaching, but like I said, this is more of a decision you would make