Incredibly rare lp from 1967 by true pioneer Grossi. Minimalist before the Minimalists, composer at the Studio di Fonologia Musicale of RAI in Milano in the early sixties, early pioneer of Computer Music, founder of the Studio of Phonology of Florence and Pisa and visual artist. This lp is of the highest quality and the good news is that its still sealed - wow. I have another copy that i opened so audio can be arranged if requested. RARE MICROPRESS