It's well known that music has the power to soothe the savage beast. This image goes back through Shakespeare to the stories of Pythagoras, who witnessed a young man, enraged after rejection by his lady love, putting dry sticks around her abode, plotting to burn the house down.
The Father of Mathematics noticed that a nearby flute player was playing in a certain mode, and that it seemed to enflame the man's anger. He went to the flute player and urged him to quickly change to a different mode, one that was softer, and more emotional. Within minutes, the young man stopped what he was doing, sat down and cried, his will to destroy replaced by the need to grieve.