The Simpsons took over the Hollywood Bowl last night to celebrate their 25th anniversary and highlight some of the show’s best musical moments. Weird Al was there to perform a song about Homer and Marge set to the tune of John Mellencamp’s “Jack And Diane,” Conan O’Brien did “The Monorail Song” from the famous Simpsons episode that he wrote, and the Los Angeles Gay Men’s Chorus was led by Hans Zimmer and sang “Spider Pig” and the Stonecutters song. Series creator Matt Groening and cast members Nancy Cartwright, Yeardley Smith, and Hank Azaria were also there. Watch video from the show below.