English National Ballet has launched the New Year with two double bills anchored by August Bournonville’s beloved “La Sylphide.” Over the course of a two-week run, the Romantic staple—a flutter of forest sprites and lively Highlanders—is alternately paired with Kenneth Macmillan’s “Song of the Earth” and Roland Petit’s “Le Jeune Homme et la Mort,” both of which dedicate a principal role to Death.
