So the music played on throughout the Public Theater's marvelous production of Shakespeare's Twelfth Night on a spectacular night at Central Park's Delacorte Theater. The cast, led by Anne Hathaway, put in lively and delightful performances under the clever direction of Daniel Sullivan.

Ms. Hathaway was Viola, who became Cesario for much of the play, and she easily carried out both roles with aplomb. There was a genuineness and frankness in her approach....