For her final show of 2011, Feist wanted to end her band's gig in Mexico City in a big way. She wasn't going to just do a few spirited covers or encores or what have you. Rather, she went all the way out there, hired a Slash impersonator -- or just got someone in her band to dress like him -- and launched into a cover of Guns N' Roses' "November Rain." And to add to the insanity, Feist beat the living shit out of a piñata. Of course. Watch the footage below.