[Illustration:  Constance, wife of Mozart.  From an engraving by Nissen.]

Although poor, Mozart, through his music, had become acquainted with titled personages and was known at court.  He and Constance, shortly after their wedding, were walking in the Prater with their pet dog.  To make the dog bark, Mozart playfully pretended to strike Constance with his cane.  At that moment the Emperor, chancing to come out of a summer house and seeing Mozart’s action, which he misinterpreted, began chiding him for abusing his wife so shortly after they had been married.  When his mistake was explained to him, he was highly amused.  Later he could not fail to hear of the couple’s devotion.  “Vienna was witness to these relations,” wrote a contemporary of Mozart’s and Constance’s love for each other; and when Aloysia and her husband quarrelled and separated, the Emperor, meeting Constance and referring to her sister’s troubles, said, “What a difference it makes to have a good husband.”

In spite of poverty and its attendant struggles, Mozart’s marriage was a happy one, because it was a marriage of love.  Like every child of genius, he had his moods, but Constance adapted herself to them and thereby won his confidence and gained an influence over him which, however, she brought into play only when the occasion demanded.  When he was thinking out a work, he was absent-minded, and at such times she always was ready to humor him, and even cut his meat for him at table, as he was apt during such periods of abstraction to injure himself.  But when he had a composition well in mind, to put it on paper seemed little more to him than copying; and then he loved to have her sit by him and tell him stories—­yes, regular fairy tales and children’s stories, as if he himself still were a child.  He would write and listen, drop his pen and laugh, and then go on with work again.  The day before the first performance of “Don Giovanni,” when the final rehearsal already had been held, the overture still remained unwritten.  It had to be written overnight, and it was she who sat by him and relieved the rush and strain of work with her cheerful prattle.  It is said that, among other things, she read to him the story of “Aladdin and the Wonderful Lamp.”  Be that as it may;—­she rubbed the lamp, and the overture to “Don Giovanni” appeared.

Would that their life could be portrayed in a series of such charming pictures! but grinding poverty was there also, and the bitterness of disappointed hopes.  His sensitive nature could not withstand the repeated material shocks to which it was subjected.  And the pity is, that it gave way just when there seemed a prospect of a change.  “The Magic Flute” had been produced with great success, and that in the face of relentless opposition from envious rivals; and orders from new sources and on better terms were coming to him.  But the turn of the tide was too late.  When he received an order for a Requiem