Then the emperor commanded his coach to be made ready, and he took the youth with him, and they drove to the spot, for he wished to see for himself whether the young man's confession was true; but when they reached the place only one stem was left. So the emperor desired his attendants to cut him a flute from the remaining stem, and, when it was ready, he ordered his chamberlain to play on it. But no tune could the chamberlain play, though he was the best flute player about the court-- nothing came but the words, 'The Emperor Trojan has goat's ears.' Then the emperor knew that even the earth gave up its secrets, and he granted the young man his life, but he never allowed him to be his barber any more. (Volksmarchen der Serben.) (from The Violet Fairy Book, edited by Andrew Lang)