The most of the people are so stressed, that they don't realize, that there is somebody who loves them.
It's a tragedy, because they just have to stop going for a moment and look what's hapening around them, and than they will find. But the most people have no time, and they never see something until the end of their life.

You have the Devil and he has a daughter, but she is good. She believes in humanity.
But the Devil shows her during the concert, that there is no humanity in our society.
The daughter realize that if she wants peace in the world, she has to murder his father because he is the reson for bad things in the world.
So at the end of the concert, she shut down his father. But by doing this she becomes bad, too, because she used the way of her father to result the problem. And so she becomes like her father, and least her father has won the battle.