On the page, this libretto is a banal, cliched, and utterly forgettable love triangle tale. Imagine my surprise when I watched the performance and found it to be the scaffolding of a thoroughly enjoyable opera. (I am referring to the Met’s 2007 version with Anna Netrebko as Elvira.) The bare-bones lyrics allow Bellini’s score and the performers’ voices to carry both the emotional weight and the narrative punch, proving that it’s possible to make a good opera out of lousy libretto. A beautiful blending of voices combined with Bellini’s undulating (if not very memorable) score carry this one.