This weekend’s broadcast from the Metropolitan Opera features a performance of Cosi fan tutte. James Levine conducts Mozart’s beloved opera about testing the ties of love. The cast is filled with youthful Met stars: Susanna Phillips and Isabel Leonard are the sisters Fiordiligi and Dorabella, Matthew Polenzani and Rodion Pogossov are their lovers, with Danielle de Niese as the scheming Despina. The curtain rises at 10 a.m. on April 26. The production is also simulcast in HD at select area theaters.