Is the operatic tradition defunct? Where and how should new operas be put on? And which are the great modern operas? On the opening of Alexander Raskatov's A Dog's Heart at the Coliseum in London, Jan Dalley, FT arts editor, puts these questions to Andrew Clark, the paper's chief classical music critic, and Nicholas Payne, former director of The Royal Opera, the English National Opera and Opera North. Plus, Martin Bernheimer, the FT's classical music critic in New York, discusses what he sees as the conservatism of American opera-goers.