Autumn Fest is an event that took place in the Season Twenty-Three episode, "Band in China".
Background[]
Stan's band, Crimson Dawn, is scheduled to perform at Autumn Fest and everyone in town comes to support them, with the exception of Randy, who takes a plane to China.
At Autumn Fest, Mayor McDaniels introduces Crimson Dawn to the stage, right after South Park Sounderoos' performance. The audience is excited about them, but later shocked when the band performs the heavy metal song "Useless Sacrifice", with Butters screaming "Get me off this farm!"