Answer:
If I have it I don't share it. If I share it I don't have it. What is it?
I am known for my natural tuxedo and marching
I am long and slim works in light. Has but one eye and an awful bite.
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?
I open to close but I close to open. I'm surrounded by water but I'm never soaking. What am I?
When is it bad luck to see a black cat?