When he grew sleepy, she told him fairy stories. She made the stories of _Cinderella_ and _Aladdin's Lamp_ so funny that Mozart laughed till the tears rolled down his cheeks. In spite of the tales he grew so sleepy that he felt obliged to lie down. His wife promised to call him after he had slept an hour. The hour passed and Mozart was sleeping soundly. Another hour and still he did not waken. At last, when his wife called him, he arose and began his work. In two hours he had written a beautiful composition for the orchestra. Mozart was fond of playing at night and often played for hours at a time. If he sat down to the piano at nine o'clock in the evening, he seldom left it before midnight. In 1785 Mozart's father visited Vienna. He attended a concert given by his son. He was pleased to see that the emperor was there. Leopold Mozart watched him to see how he was enjoying the music. At the end of the concert the emperor rose and, waving his hat, cried, "Bravo, Mozart!" The father was delighted that his son had won the emperor's praise. While in Vienna, Mozart's father talked with the great musician Haydn, who said, "I declare to you before God and as an honest man that I regard your son as the greatest composer I have ever heard." This was high praise from so great a man as Haydn. It was a fine compliment, too, to have the emperor shout "Bravo"; yet Mozart was poor and often sad. He worked hard and composed much beautiful music. Sometimes he received no pay for his work; sometimes he was cheated out of money that he had honestly earned. Once the king asked Mozart to write music for a court concert. He put it off until he had no time to write the part which he was to perform himself. So he went to the concert with his part unwritten. He placed a sheet of paper on the piano, and looked at it as if the notes were written there. The king, who was peeping everywhere, happened to look at the sheet of paper. Surprised to see nothing but empty lines, he said to Mozart, "Where is your part?" "Here," replied the musician, tapping his forehead. Mozart is best known as a writer of operas. Most of his operas were composed in Vienna. One of them is called _The Marriage of Figaro_. Another is named _The Magic Flute_. Many people like it the best of any opera that Mozart ever wrote. It was composed a short time before his death. Mozart was ill before _The Magic Flute_ was finished. After it had been completed, he grew much worse. His only pleasure, during his suffering, was to hear the news of how well the people liked his opera. Only the day before his death, he wished that he might hear the music of _The Magic Flute_ once again. A friend who was with him at the time went to the piano, and played and sang some parts of it. This seemed to cheer the sick man greatly.