On their sixth album, Düsseldorf's techno-pop pioneers streamlined the sprawl of their early records into the sleek electronic pulses and pinging melodies that would become their trademark. The title track is a stone classic, and not just because Afrika Bambaataa sampled it in "Planet Rock." Exuding effortless cool, the album's chugging rhythms and vocoder flourishes will have you doing the robot, while "Franz Schubert" is a twinkling ambient lullaby that'll charm kids from one to 92.