I was more concerned about the legal concept of negative use. Where while the artist owns the performance his rights only extend to those rights that prevent others from doing something. However he does have the right to adapt the work. So I considered where should he decide to excersize that right to adapt and change the work; what would happen if he wanted to rescind the original work and demand it's return. Since technically if the work is adapted it no longer conforms to the original copyright. Had a lot of time on my hands today. Took a break from studying the Cardiac Conductive System.