Christopher and David Alden are opera directors. “They are that most unusual phenomenon – twins who have pursued the same career, as opera directors, and reached a comparable eminence. Next week, when David’s revival of Handel’s Ariodante joins Christopher’s well-received new production of Janacek’s The Makropulos Case in repertory at English National Opera, their work will be running in tandem. The Guinness Book of Records has been alerted.”