It has become a cliché to compare Kraftwerk to the Beatles — but if anything, the group's impact has been wider and more enduring. During its two decades of prime creativity, Kraftwerk intersected with and influenced a staggering array of genres and phases: progressive rock, glam, krautrock, disco, post-punk, synthpop, industrial, hip-hop, techno, trance. Artists in their debt are likewise bizarrely diverse, ranging from Human League to Spacemen 3, New Order to Stereolab, Prince to Daft Punk, Afrika Bambaataa to Big Black.