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Patrick Stump, Joe Trohman, Pete Wentz, and Andy Hurley pay tribute to Spinal Tap— complete with malfunctioning chrysalis pods and a guest appearance from bassist “Derek Smalls” (Harry Shearer)—in this memorable appearance on Conan.

In this 2008 clip from the Live in Phoenix DVD, the Fall Out boys perform “Sugar, We’re Going Down” to a packed stadium.

Stump, Wentz, and Trohman grab some flattops and prove they can cut it live without all the fireworks and blaring amps.