Do the keys on a keyboard instrument count? "The Greek engineer Ctesibius of Alexandria is credited with inventing the organ in the 3rd century BC." http://en.

Do the keys on a keyboard instrument count? "The Greek engineer Ctesibius of Alexandria is credited with inventing the organ in the 3rd century BC." http://en.wikipedia.org/wiki/Pipe_organ#History_and_development http://en.wikipedia.org/wiki/Pipe_organ#History_and_developm...