Lydia Tar loves music; we know this, because she watches old clips of Bernstein lectures, and she weeps with joy. Lydia's talent leads to an EGOT and a prestigious role in Berlin. (London and New York are great, but THEY ARE NOT BERLIN.) The problem is that Lydia has a mean streak: She reduces a small child to tears, she (sort of?) drives a fallen protege to suicide, she humiliates her lead cellist without warning, and she shouts at a driver (maybe when the driver deserves, at most, a quiet word, in private). Additionally, Lydia breaks the rules. She destroys evidence in an investigation, and she cheats during an audition. A tradition in orchestras requires that prospective recruits play their prepared excerpts behind a screen--so that the conductor renders verdicts that are based purely on "sound." (The conductor isn't considering race, or gender, or manner of dress.) But Lydia peers beneath the screen, makes some quick deductions about footwear, and changes her ve...