Why is a master of Shakespeare directing the musical 'Frozen'? Because 'Let It Go' isn't too far from the Bard

“We’re standing on the same stage where ‘Oklahoma!’ premiered,” says British director Michael Grandage, gesturing at the flooring beneath his feet inside the historic St. James Theatre on West 44th Street. “‘Gertrude Lawrence and Yul Brynner did ‘The King and I’ on this stage.”

Grandage pauses...