Panic is a sudden desertion of us and a going over to the enemy of our imagination.
Marriage is good enough for the lower classes: they have facilities for desertion that are denied to us.
You just let your lower self go and then it takes on all these aspects of the society - the city with horns blowing the people yelling things at each other and the all-in-all violence and chaos of the city. Put that on stage with music and that's what this is.