Bad times for conductors: after Mariss Jansons and Daniele Gatti, William Christie (69) had to undergo a ‘preventive’ surgery and should stay in hospital for at least two weeks. So he had to cancel a new production of Jean-Philippe Rameau’s ‘Platée’ at ‘Theater an der Wien’ in Vienna. He will be replaced by Paul Agnew, the Associate Director of ‘Les Arts Florissants’.