The American Cinematheque sponsored a two-hour live Q&A with Steven Spielberg and John Williams, talking about their 50-year collaboration, on Jan. 12 at the Writers Guild Theater in Beverly Hills. It was a once-in-a-lifetime event and I was honored to be the moderator. I was also effectively the co-producer, as I chose all 12 clips (from Jaws and E.T. to Jurassic Park and Schindler’s List) and prepared all of the questions — everything from how they met to their work process and their thoughts about the use of music in cinema. It was hugely successful (the cast of The Fabelmans even attended) and a thrill for me to be on stage with this extraordinary duo. Two excellent summaries of the evening: Chris Willman’s, for Variety; and Scott Feinberg’s, for The Hollywood Reporter. And an eight-minute video condensation of highlights.