Answer:
It's been around for millions of years but is never more than a month old. What is it?
I am an instrument you can hear but cannot touch or see. What am I?
You can build or destroy. Let creativity soar but be careful at night.
By Moon or by Sun I shall be found. Yet I am undone if there's no light around.
I travel in a gaggle.
Black we are and much admired. Many seek us if they are tired. We tire the horse, and comfort man, and turn White when we've fulfilled your plan.