Answer:
I drive men mad for love of me, easily beaten, never free. What am I?
What is always coming but never arrives?
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.
I fly yet I have no wings. I cry yet I have no eyes. Darkness follows me. Lower light I never see.
In a tunnel of darkness lies a beast of iron. I can only attack when pulled back. What am I?
No matter how little or how much you use me, you change me every month.