A breakout star of ‘Hadestown’ and the chorus boys who steal the show

“In a traditional musical, there may be concern about uniformity,” said Benton Whitley, one of the casting directors for the show, an imaginative retelling of the myth of Orpheus and Eurydice. “But that is not the world of ‘Hadestown,’ ” which singer-songwriter Anaïs Mitchell developed from a concept album for the stage with director Rachel Chavkin. In fact, Whitley and his casting partner, Duncan Stewart, who also worked with Chavkin on “Natasha, Pierre & the Great Comet of 1812,” purposefully sought to cast an ensemble with vividly different looks.