Maria Callas, a Greek immigrant living in New York, was one of the most famous sopranos of her era and had a long-term affair with Aristotle Onassis. After being left by Onassis, who married Jackie Kennedy, Callas moved first to Italy and then to France.
Unable to fully recover from the betrayal, Callas tragically passed away from a heart attack in 1977, at the age of 52. Reports have also surfaced about the abuse and violence she faced during her relationship with Onassis.