Answer:
What is it that given one, you’ll have either two or none?
My voice is tender, my waist is slender and I'm often invited to play. Yet wherever I go, I must take my bow or else I have nothing to say.
What has four wings but cannot fly and uses the wind but does not know why?
Iron roof, glass walls, burns and burns and never falls.
What is the thing which, once poured out, cannot be gathered again?
What never gets any wetter no matter how hard it rains?