Answer:
You will find me with four legs, but no hair. People ride me for hours, but I don't go anywhere without needing to be tugged. Jerked or turned on, I always manage to be ready for work.
It regulates our daily movements, but it feels no interest in our lives. It directs us when to come and go, but does not care if we pay attention. What is it?
To unravel me you need a simple key, no key that was made by locksmith's hand. But a key that only I will understand.
A house of wood in a hidden place. Built without nails or glue. High above the earthen ground. It holds pale gems of blue.
I sleep by day, I fly by night. I have no feathers to aid my flight.
If lightning strikes an orchestra who is the one most likely to get hit?