Greek opera singer Maria Callas (1923 - 1977) is kissed by Italian director Franco Zeffirelli after the first night of a production of Puccini's opera 'Tosca' at Covent Garden London, 22nd January 1964. Looking on are Italian singer Renato Cioni (who plays Cavaradossi, left) and conductor Carlo Felice Cillario. (Photo by Keystone/Hulton Archive/Getty Images)
