Shirley Verrett as Lady Macbeth triumphs in the "Gran scena del sonnambulismo" in the final act of Verdi's Macbeth. This Sternstunde transpired on December 7, 1975 at La Scala, with Claudio Abbado conducting. Sharing the glory with la Verrett are Piero Cappuccilli (Macbeth) and Franco Tagliavini (Macduff).