Fierce and Clever. Diva opera star Maria Callas is alternately dismayed and impressed by students who parade before her. In this one Master Class, she reminisces the glories and criticisms of her own career and tumultuous life. Manifesting the unforgiving elements of her life in a final monologue, she decries the sacrifices she has made, taken in the name of art … from her childhood, to her bitter rivalries, to her private life and to her triumphs at La Scala.