"... the textually inauthentic but staggering nineteen-second pianissimo high A♭ which floats over the top of the ensemble finale of the Prologue, is just as astonishingly vocalised... As the live sets confirm, no knob-twiddling... would have been necessary to make Caballé's tour de force perfectly audible above orchestra, chorus and half a dozen other soloists."
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"She especially treasures a telephone call she received from
Marilyn Horne in which the American mezzo, besides congratulating Montserrat on her triumph, announced that she herself would never now consider singing the role of Lucrezia since Caballé had sung it to perfection."