DeMarco and co played at the Chile leg of Lollapalooza last week, with the singer switching places with drummer Joe McMurray to cover the track.
McMurray took on lead vocal duties, with his slacker-ish drawl sounding more like Parquet Courts, before diving into the crowd for a singalong with fans.
Watch in the video below:
Back in December, Mac DeMarco live-streamed 26 minutes of new music.
NME spoke to DeMarco last year, who gave his eight commandments for living a better life.
At one point, DeMarco explained: “I’m not a very healthy eater. I don’t react well to diary or gluten, but I don’t give a shit. I’m like, “Gimme the pizza!” Well – you reap what sow. I eat that stuff all the time and then I’m on the can for, like, three hours. Drinking copious amounts of alcohol for the better part of a tour, that’s not gonna help at the back. But it’s nothing to be ashamed of. Sometimes you poop your pants. But it’s not, like, a lot. It’s just a very unhealthy little shart, you know what I mean?”