Marc Riley presents the story of Kraftwerk, arguably one of the most influential bands of the 20th century and certainly one of the most enigmatic. Former Kraftwerk member Wolfgang Flür and fans including including Gary Numan, John Foxx, The Smiths’ Johnny Marr and writer Paul Morley offer their impressions of the band without whom modern music would sound very different. Part of Radio 4 on Music, re-releasing the best of Radio 4's music back catalogue.