Three decades after it first drew its curtains, Phantom of the Opera continues to thrill audiences around the world with its high drama and stellar music. In celebration of the musical’s 30th anniversary, Michael Cormick and Claire Lyon, who played the Raoul and Christine in previous productions, are presenting an evening of songs from the show in Kuala Lumpur. They talk to us about performing in the production, and why Phantom remains such a time-honoured classic.