On Monday night, Alt-J played Madison Square Garden and sold it out, which is crazy. And last night, they did musical-guest duty on The Tonight Show. On Jimmy Fallon’s stage, all four members lined up at the front of the stage, giving a visual cue that this is the type of band where all of them are equal contributors. And they sure seemed to share the same wavelength, working up the intricate groove of “Every Other Freckle,” the best song on their 2014 album This Is All Yours. Watch the performance below.