Of course, the two characters are in Europe. They must recognize A previous piano told German soldiers that he has a career as a pianist, he has played enough piano, listening to German troops. The soldier, so he accepted.
But Shannon said the two characters are in Europe. They must have known piano A previously told the Germans that his career as a pianist, he has played the piano for the German audience. A soldier then accept him.
Of course, two characters in Europe, they must know the piano before A told the German soldiers that he does a pianist when he was playing the piano for German soldiers. The soldier was accepted in him.