So pre-70s shows where always a pending task of mine and only recently started getting to know Rodger's and Hammerstein, Lerner and Loewe etc. and I noticed that certain terms like "I want song", "Exposition song" that are quite prominent in modern musicals do really apply in the kind of formulaic way they do on a Disney musical for instance.
That made me curious about how the traditional book musical works structurally, as I had assumed it evolved onto a fixed coherent form with standard principles. So... Is there a common pattern regarding the position and function of songs on shows from this period? I feel like there usually is a Love Duet and an 11 o'clock number, but the rest seems a bit arbitrary to me.
Jack Viertel wrote a very interesting and enjoyable book recently on just that (the structure of American musicals, using classic shows as examples). "The Secret Life of the American Musical" Highly recommended.
https://www.amazon.com/dp/B011I5QMRA/ref=dp-kindle-redirect?_encoding=UTF8&btkr=1
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