I just saw “Oklahoma”–(well, okay–it was a local amatuer production by volunteers–but it was a lot of fun!). Then I happened to catch on TV a movie version of the Broadway show (1960-ish?).
I know that when it first appeared on Broadway, Oklahoma was considered revolutionary for its choreography, and maybe for other reasons to. But to me, it looks a lot like other musicals. What was so revolutionary about it? Why was it considered to be such a classic?