Conversation so far:
When did Rodgers and Hammerstein start developing Oklahoma?
Rodgers and Hammerstein started developing Oklahoma! in 1941.
How were the reviews at the New Haven tryout for Oklahoma?
The New Haven and Boston audiences were enthusiastic, although the reviews were only fair for Oklahoma.
What changes were made based in Oklahoma! on the reviews?
The addition of the show-stopping musical number, Oklahoma and the decision to retitle the musical after that number.
Were any songs cut before Oklahoma! opened on broadway?

Question: What was the casting process?
Self-contained rewrite: What was the casting process for Oklahoma?