The fourth night as he was practicing, a mother mouse came in with her baby, asking him to heal her sick son. When Gauche told her that he wasn't a doctor, she replied that the sound of his music had already healed a number of animals. Gauche put the sick little mouse into a hole of his cello and played a rhapsody. When Gauche finished, the little mouse became fine and was able to run around. The mother mouse cried and thanked Gauche, and left.