We went to the opening of this building at the University of Miami two years ago. At that time it was state of the art, best of the best. After all of the pageantry and food we toured to building. One of the rooms really caught my eye. It contained 13 or more pianos. The professor and the students all could play at the same time, but the music came form the head phones. Thus when the professor played everyone heard it. But when the students were playing they could hear only their own music. The professor could listen to the music from any piano that he wanted.