附註:Compact disc.
Duration: 26 min., 26 sec. ; 13 min., 42 sec. ; 12 min., 27 sec.
Issued with Neue Zeitschrift fur Musik, v. 155, no. 5 (Sept. 1994).
Concert for piano and orchestra (1957-58) -- Diary : how to improve the world (you will only make matters worse) continued 1970-71 -- John Cage und Klaus Schoning im Gesprach (interview in English).
