Donizetti: Lucia Di Lammermoor (complete opera recorded in 1959)

In the six years that had passed since 1953, and her first recording of Lucia di Lammermoor, Callas's voice had maybe become less robust, but her singing had become still more perceptive. As Gramophone said: 'Mme Callas has refined her interpretation of the role, and made it more exquisite, more fascinating, musically and dramatically more subtle - in a word, more beautiful.'