This performance was given by the La Scala company while on tour in Montreal in 1967. The singers are all familiar and they do their roles well. Souliotis and Guelfi tear up the stage with their almost reckless singing. Of course Souliotis shouldn't have been singing this role so early in her career, yet she brings an energy, a ferocity to the role that totally suits the character. Guelfi was never a subtle singer, but he was certainly an exciting one with his take-no-prisoners approach. His high G at the end of his Act 4 cabaletta is tremendously exciting and the audience responds in kind. Ghiaurov is a noble, fanatical Zaccarias who excites the audience whenever he opens his mouth. Cecchele and Lane are both excellent in their smaller roles. Some of Gavazzeni's tempi are strangely slow.The drawback here is the sound. The voices can certainly be heard, but they are recessed. It probably gives one a better idea of what they sounded like in the house. There is some worn tape at the beginning of Act 3, but it does not affect the soloists. This is for diehard Nabucco fans or fans of the singers.