'We are not artists nor musicians. We are workers.' Ignoring nearly all rock traditions, experimenting in near-total secrecy in their Düsseldorf studio, Kraftwerk fused sound and technology, graphic design and performance, modernist Bauhaus aesthetics and Rhineland industrialisation - even human and machine - to change the course of modern music. This is the story of Kraftwerk the cultural phenomenon, who turned electronic music into avant-garde concept art and created the soundtrack to our digital age.