During a research trip, Lisa learns that Sideshow Bob is the chief scientist at a big chemical engineering company; Marge tries to teach a teen church group about healthy sexual practices.
Lakmé / Act 1: "Viens, Mallika, ... Dôme épais" (Flower Duet) — Leo Delibes & Dame Joan Sutherland & Jane Berbié & Orchestre National de l'Opéra de Monte-Carlo & Richard Bonynge