It was a star-studded musical extravaganza at the Hollywood Bowl last night, all thanks to America's favorite family, The Simpsons.

In celebration of the show's 25th anniversary, the Los Angeles Philharmonic Orchestra backed the likes of Weird Al Yankovic, Conan O'Brien, Jon Lovitz, Hank Azaria and the Los Angeles Gay Men's Chorus, Reuters reports. All of the performers played tunes from the show, which will enter its 26th season later this month (Sept. 28). Series creator Matt Groening kicked things off by talking about the show's early days to a large crowd, which included voice actors Nancy Cartwright (Bart) and Yeardley Smith (Lisa).

There were many highlights of the evening, but perhaps the most notable was O'Brien taking the stage dressed as the shifty monorail salesman Lyle Lanley to perform "Monorail" (see below) from the episode he penned in 1994 titled "Marge vs. The Monorail." "I can't go anywhere after 21 years in front of the camera without someone coming out of the crowd and going 'Monorail man!'" the talk show host joked.

Other performances included a Hans Zimmer-led "Spider-Pig" from The Simpsons Movie and Stonecutters song, Weird Al's reworking of "Jack and Diane," and Jon Lovitz doing "Stop The Planet of The Apes."

It's been a big month for the series as FXX recently wrapped its "Every Simpsons Ever" 12-day marathon, which featured all 552 episodes. The channel continues to air lengthy blocks of the show as well. This year's season premiere will be a special crossover episode with members of Family Guy visiting Springfield.

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