Didnt he parody his own and other avantguardists work for the Late Gerard Hoffnungs concerts at the South Bank here in London UK? (under a pseudonim of course)IF I recall this consisted og an extremely atonal exchange between a pair of male singers with an "accompaniment" of noises in German, the text was given and translated in the program and the English version was as follows
Verse 1
Voice 1" who was that Lady I am after seeing you with last evening"
Voice 2 " That was no lady that was my wife
Verse 2
Voice 1" Who was that woman I am after seeing you with with last evening"
Voice 2 " That was no woman that was my brother, he walks in this fashion"