Bernard Parmegiani is a leading figure in the history of the GRM and electroacoustic music as a whole. All three pieces, virtuosic and inspired, span over a particularly fruitful period in the composer's career. A period of exploration, discovery, where musical writing was transcended by a burst of the sound palette, notably with the onset of synthesis and instrumental exploration merging with a concrete technique that had reached its maturity. The musical works presented here thus reflect, each in their own way, this pivotal and flourishing period of the late 1960s, the first golden age of concrete music