7 Deaths of Maria Callas is a multi-disciplinary affair as it combines opera, live and performance art and video projections. It is the brainchild of Marina Abramović, who is known as the mother of performance art, and is currently enjoying a retrospective at the Royal Academy of Arts. Abramović has always felt an affinity with Maria Callas, and the suffering caused by disillusionment and dramatic love affairs that lies at the heart of many of her own works finds its...