Answer:
I am the noblest musical instrument
I am a five letter word. If you remove my first letter I am a form of energy. Remove my first two and I am needed to live. Scramble the last three and you can drink me. What am I?
People need me, yet they give me away every day. What am I?
What always goes to bed with its shoes on?
By Moon or by Sun I shall be found. Yet I am undone if there's no light around.
Mountains will crumble and temples will fall. And no man can survive its endless call.