Subscribers may view the full text of this article in its original form through TimesMachine. The first performance of Wagner's "Lohengrin" in German at the Metropolitan Opera House last night ...

Federal Republic of Germany Berlin - Staatsoper Berlin showing the opera: Lohengrin by Richard Wagner; directed by: Stefan Herheim Source: Lieberenz/ullstein bild via Getty Images VIVA!

Now the Opera has released “Eun Sun Kim: A Journey Into Lohengrin,” an absorbing and insightful documentary about the company’s music director and what it takes to put on such a production.