Signature tune of "DAMIL deskoteka", 1981

I found this in my old archive from the time I was part of the Czech underground movement. It is the "signature tune" for the illegal shows I hosted under the name "DAMIL DESKOTEKA." ( with Daniel Schubert) I started every show with this piece, which was a kind of performance art because it lasted 25 minutes—an unbelievably long time. At the end of the piece (you can hear about 20 minutes in), I would finally introduce our show ( text is mine). The musician playing and composing this tune is Vladimir Grulich.