Answer:
As a state in America I am round on both sides and high in the middle.
What has an eye but cannot see?
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 black within and red without; with four corners round about. What am I?
I have no wallet but I pay my way. I travel the world but in a corner I stay. What am I?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.