and there's also "empty words pt. III" recorded at teatro lirico di milano on dec. 2nd 1977 (issued on cd in 1990 on cramps records, don't know if it's still available).
This has been reissued on Ampersand, which also has many other fine reissues:
http://WWW.AMPERSOUND.COM/EMPTYWORDS.HTM http://WWW.AMPERSOUND.COM/
Ampersand is the sibling label of Locust Music (http://www.locustmusic.com/)
Ernst