**sold out at source, last copies** Edition of 250 copies. Recorded during a long weekend session at the laboratory of the Department of Electronics of Tampere University of Technology (TTKK) in August 1973. The whole work was done by using tape recorders, three signal generators, one digital noise generator, two microphones and a number of self made (analog) electronic circuits and different combinations of all these elements. All the ideas in these recordings, the producing, recording and mixing of the sound material, as well as the composition of the pieces Matti Karjalainen and Unto Laine, in August and September 1973.

Digitalization Matti Karjalainen, Espoo 1997; Pekka Poramo and Pekka Ruotsalainen, Tampere 2015. The digital finishing of the pieces and the remix of the pice 9 Unto Laine, Fiskars 2017. Mastering Risto Ylihärsilä. Cover design Sampo Karjalainen.

This work is dedicated to the memory of Matti Karjalainen (1946-2010) and Risto Poramo (1951-2001).