Eva Braun took a lot of trouble to amuse the Führer. Once she tried to draw the photographer Walter Frentz and her friend Herta into a conversation about new films. Hitler began quietly whistling a tune. Eva Braun said, ‘You’re not whistling that properly, it goes like this.’ And she whistled the real tune. ‘No, no, I’m right,’ said the Führer. ‘I bet you I’m right,’ she replied. ‘You know I never bet against you because I’ll have to pay in any case,’ said Hitler. ‘If I win I must be magnanimous and refuse to take my winnings, and if she wins I have to pay her,’ he explained to the rest of us. ‘Then let’s play the record and you’ll see,’ suggested Eva Braun. Albert Bormann was the adjutant on duty. He rose and put the record in question - I forget what it was - on the gramophone. We all listened hard and intently, and Eva Braun turned out to be right. She was triumphant. ‘Yes,’ said Hitler. ‘So you were right, but the composer composed it wrong. If he’d been as musical as me then he’d have composed my tune.’ We all laughed, but I do believe Hitler meant it seriously.
— Traudl Junge, Until the Final Hour: Hitler’s Last Secretary