Answer:
Hold these between your knees if you want to set a Cuban beat.
What binds two people yet touches only one?
The man who invented it doesn't want it. The man who bought it doesn't need it. The man who needs it doesn't know it. What is it?
In buckles or lace, they help set the pace. The farther you go, the thinner they grow.
I fly, yet I have no wings. I cry, yet I have no eyes. Darkness follows me. Lower light I never see.
I am your mother's brother's only brother in law. Who am I?