As Opera Holland Park prepares for the revival of its celebrated 2018 production of La traviata, director Rodula Gaitanou, conductor Matthew Kofi Waldren, soprano Lauren Fagan and Professor Lynda Nead, contributor to Violetta and her Sisters and curator of The Fallen Woman at the Foundling Museum, join Anna Picard to discuss the enduring appeal of Verdi’s opera: its romance, its realism and its themes of money, morality and mortality. What do we learn from repeated exposure to this story and this music?