The music sways between nearly inaudible whir, clatter and scrape and bubbling blasts of sound. Their overtures to noise, anti-musical operations and compositional experiments on this disc, like their English brethren AMM, completely anticipated a strategic break with the standards of virtuosity.

This work represents the earliest incarnation of Gruppo and features Ennio Morricone, better known for his soundtrack work, Franco Evangelisti, Egisto Macchi, Antonello Neri, Giovanni Piazza and Italian Instabile Orchestra member, Giancarlo Schiaffini. Contains previously unpublished photos and original notes by Franco Evangelisti.