One day mozart saw an old manthe violin in the street corner. He found out the old man was playing one of his compositions（乐曲）.The old man played forbut the cap in front of him was still empty.  .  put any money into it. Mozart asked the old man."Do you make a living  . playing the violin?" The old man said he did. Mozart took over the violin from the old and began to play.

He played so well that all the passers-by（过路人）stopped to listen to the   music and soon the old man felt surprised that the man could play so well. He asked Mozart,"Who are you, sir?" "A poor musician like you." Then Mozart gave the violin to the old man and  .