On 31 December 1990, the woman called the greatest diva of the century paid a spectacular farewell to the Royal Opera House at Covent Garden after more than 30 years at the pinnacle of fame. In this exclusive film, Omnibus presents a retrospective of her career, where Dame Joan and her husband, conductor Richard Bonynge, talk about their life together in opera and close friends and colleagues, Luciano Pavarotti, Dame Kiri te Kanawa, and her biographer Norma Major, pay tribute to Dame Joan's career in opera. Sir Sidney Nolan and critic Bernard Levin give their assessment.