Charlie Chaplin physical resemblance that supplied the plot for Chaplin's next film, "The Great Dictator", which directly satirised Hitler and attacked fascism. Chaplin spent two years developing the script, and began filming in September 1939 – six days after Britain declared war on Germany. He had submitted to using spoken dialogue, partly out of acceptance that he had no other choice, but also because he recognised it as a better method for delivering a political message. Making a comedy about Hitler was seen as highly controversial, but Chaplin's financial independence allowed him to take the risk. "I was determined to go ahead,"
Charlie Chaplin with Chaplin describing to the composer(s) exactly what he wanted and singing or playing tunes he had improvised on the piano. These tunes were then developed further in a close collaboration among the composer(s) and Chaplin. According to film historian Jeffrey Vance, "although he relied upon associates to arrange varied and complex instrumentation, the musical imperative is his, and not a note in a Chaplin musical score was placed there without his assent." Chaplin's compositions produced three popular songs. "Smile", composed originally for "Modern Times" (1936) and later set to lyrics by John Turner and Geoffrey Parsons, was a hit