Beck performed with a famous ‘Jack’ at this weekend’s Sasquatch! Music Festival, but it wasn’t the one he just recorded a single with. Rather, Mr. Hansen’s encore featured Jack Black and Kyle Gass, AKA Tenacious D, who aided in performances of “Mutherfuker” and “E-Pro”. Watch fan footage below (via 107.7 The End)

Stay tuned for our complete recap of Sasquatch! 2012. And, if you haven’t already, pick up a copy of Beck’s new Jack White-produced 7″ through Third Man Record’s website.