The first ever film about this extraordinary man - who taught himself Sanskrit, lived in a street of brothels in Algiers, cycled into the Sahara Desert, allied himself during the First World War with a ‘red priest' who pinned on the door of his church 'prayers at noon for the victims of Imperial Aggression', who hated the words used to his most famous tune I Vow to Thee My Country because it was the opposite of what he believed, who distributed a newspaper called The Socialist Worker, whose music - especially The Planets - owed little or nothing to anyone, least of all the ‘English folk song tradition', but was a very great composer who died of cancer, broken and disillusioned, before he was 60.