Repress! Don't be mislead by the name, the enigmatic M. Zalla is one of the numerous alter egos of the Italian maestro Piero Umiliani. Umiliani, during his period of fascination for psychedelic and electronic atmospheres, composed a good number of musical portraits dedicated, as the title reveals, to the problems of his time. We are at the beginning of '70 and Italians are worried about the mafia, terrorism and social conflicts: so it makes sense that the music chosen to represent these anxious problems had an experimental nature; dark and disturbing, a sort of unicum in the long and extremely productive career of Umiliani. The record presents various styles: from Floydian atmospheres to compositions characterized by a great use of drum machines and synthesizer (Moog and Sinthy).