We know this because he says so. Twice! You get one when Conan excitedly greets the band after this performance of the latest Vampire Weekend single "The Kids Don't Stand A Chance," and one more before Mr. O'Brien introduces the Max Weinberg 7. Per custom, if it's a performance at 30 Rock, Ezra will bring the string section. And if it's a performance anywhere, Rostam will bring the scarf. The twist on this "Kids" take? No sign of Chromeo.