AdvertisementKraftwerk And The Art Of No EmotionApril 16, 2012Bob BoilenfacebookEmailRobots: Ralf Hutter, Henning Schmitz, Fritz Hilpert, and Stefan Pfaffe of the band Kraftwerk perform during the Kraftwerk — Retrospective 1 2 3 4 5 6 7 8 at The Museum of Modern Art on April 10, 2012 in New York City. (Getty Images)