Answer:
What is the end of everything?
When a doctor hits you with a hammer he is testing this
What goes through towns and over hills but never moves?
Hot tempered and sometimes it blows its top, making a mess of everything.
It is a symphony of noise, It can produce both grief and joys, It is inspiring and grand, Made by a person or a band.
People take me on walks and I run and have fun. What am I?