Writer and broadcaster David Hepworth charts the story of secret recordings, artist out-takes and demo tapes that make up the world of bootleg recordings, from Bob Dylan's Great White Wonder in 1969 to the file sharing internet sites of the 21st century, via the Beatles, the Stones, Bruce Springsteen, Sex Pistols and Led Zeppelin. David also talks to contemporary artists including Ryan Adams who have come to embrace the bootleggers, and hears from bootleggers of the 1960s and 70s who pitted their wits against security guards, the Feds and the record companies to get their unofficial releases out to the public. A Bite Yer Legs production for BBC Radio 4.