Answer:
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 am made of wood but can't be sawed? What am I?
What force and strength cannot get through I with my unique teeth can do.
I help engines spin and pants stay up.
The more of me there is the less you see.
What never gets any wetter no matter how hard it rains?