21 x 15cm, 1pp announcemnet leaflet for an experimental music concert. Works include Louis Andriessen - Contra Tempus; Misja Mengelberg - hello, windyboys and Peter Schat - On escalation, in memoriam Ernesto Che Guevara. Interestingly Peter Schat became associated with the Dutch Provo movement - in particular helping by allowing his cellar to be used for the printing of the various publications (some of which were deemed illegal). In 1969 he was part of a very public protest  - "notenkrakersactie" - disrupting a performance of the Concertgebouw Orchestra to demand debate on public musical policies. VG+.