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. What am I?
Angels and pilots work with me.
What kind of cheese is made backwards?
What's the capital of France?
When it comes to me, you go on red and stops on green. What am I?
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.