Last night New York rapper Le1f made his national television debut on the Late Show with David Letterman (median viewer age: 59-years old). In a full Hood By Air look, he performed “Wut” — that tangled, double-time verse and all — with a flank of dancers and a backing band that included Dev Hynes. “Wut” first appeared on 2012′s Dark York, but it’s been cleaned up and reprised for his recent Hey EP, which is out now Terrible/XL.