It is 30 years since Amadeus swept the board at the Academy Awards. Miloš Forman’s 1984 film of Peter Shaffer’s 1979 play, took home eight statuettes that night, including best film, best director, best actor and best adapted screenplay. Arguably the finest movie ever made about the process of artistic creation and the unbridgeable gap between human genius and mediocrity, it has taken its place in motion picture history and is invariably described as a masterpiece. All this is despite the fact the film plays shamelessly fast and loose with historical fact, taking as its basis a supposedly bitter rivalry...