Bradley Cooper’s biopic mines the many tensions of Leonard Bernstein’s life in pursuit of high art. Here’s what’s fact and what’s fantasia.

<img src="https://compote.slate.com/images/08de77a4-bed8-48fb-8e49-8a9f7a53ef90.jpeg?crop=1560,1040,x0,y0" title="What’s Fact and What’s Fiction in Maestro” /> 

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