Answer:
Lives without a body, hears without ears, speaks without a mouth, to which the air alone gives birth. What is it?
My life can be measured in hours. I serve by being devoured. Thin, I am quick. Fat, I am slow. Wind is my foe.
What can be forever wound up but never annoyed?
I hide but my head is outside.
It is able to speak because it has a hard gone. You know what it is as soon as it has sung. What is it?
I can only be played on a windy day