"I actually might get you to this opera," Sydney says, and she's right. It's an opera of The Fly, directed by David Cronenberg, music by Howard Shore, libretto by David Henry Hwang, conducted by Placido Domingo.
While set in the 1950s, the opera apparently closely tracks Cronenberg's 1986 movie, rather than the 1958 Kurt Neumann movie (starring David Hedison and Vincent Price) and the 1957 George Langelaan story in Playboy that launched the franchise.
Actually, Sydney got me to one opera already in this lifetime: Jerry Springer: The Opera in London, starring David Soul. It was a stitch, and I even bought the T-shirt.