XS (1984)

Documents have been recovered and posted on Rhys Chatham & Joseph Nechvatal's opera opus and have been blogged on continuo-docs in 2 parts:

http://continuo-docs.tumblr.com/post/141998971532/rhys-chatham-joseph-ne...
&
http://continuo-docs.tumblr.com/post/141998954287/rhys-chatham-joseph-ne...