Jimmy Fallon‘s Neil Young impression is pretty uncanny and could be trotted out every Thursday for no other reason than to illicit giggles. But when occasion calls for it, such as Graham Nash and David Crosby stopping by his show to help Fallon sing Miley Cyrus’ “Party in the U.S.A.”, it’s a synergy of epic proportions that makes any day doubly delightful. Check out the video above (via TwentyFourBit). Of note: watch Graham Nash be wicked into his part, and then laugh it off in between. You ain’t fooling anyone, Nash, you dig the living hell out of the Daughter Cyrus.