Rob Young investigates how the idea of folk has been handed down and transformed by successive generations - song collectors, composers, Marxist revivalists, folk-rockers, psychedelic voyagers, free festival-goers, experimental pop stars and electronic innovators. In a sweeping panorama of Albion's soundscape that takes in the pioneer spirit of Cecil Sharp; the pastoral classicism of Ralph Vaughan Williams and Peter Warlock; the industrial folk revival of Ewan MacColl and A. L.