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 type of shoes do spies wear?
I go through a door but never go in and never come out.
Tear one off and scratch my head what was red is black instead. What is it?
When I come in from sea to shore twenty paces you'll see No less no more.
If you can get this professional's attention you can get where you need to go for a price.