Strictly limited LP with recordings of experimental and electroacoustic composers by the French Institute Groupe de Recherches Musicales, which - founded shortly after the Second World War by Pierre Schaeffer - still has a significant influence on the electronic music scene today. This selection of 9 tracks from some of the most influential members of the institute - created between 1949 and 2004 - reflects the stylistic range of the musicians (including Jean-Michel Jarre).