If you go to a festival with a line-up as diverse as Lollapalooza, you’re probably going to see some interesting and unexpected surprise collaborations. Which was the case last night during Paul McCartney’s headlining set, when he brought out Alabama Shakes frontwoman Brittany Howard. The two performed Beatles classic “Get Back,” and they absolutely kill it. Watch video of that above, as well as McCartney playing “FourFiveSeconds” and “We Can Work It Out” below.

(Billboard)