During a lecture last week, I challenged the notion of creating the unplayable work. This is not new...consider Cage's Freeman Etudes.
Cage, himself thought the work to be unplayable. I participated in Irvine Arditti's morning sessions at Darmstadt in 2012 at the Orangerie and his performance of the etudes that evening in concert.
When we consider the concept of a work being "unplayable" we may take it a step further; what if the instrument as we know it today, is not physically capable of execution.
Herein lies the opportunity to define an ideated system of change.