A tape recorder. It is this device that served as the first electronic instrument to Jean-Michel Jarre: « My grandfather had given me a tape recorder and with my rock band, I recorded guitar solos that I was reversing, organ parts that I was slowing down. » Passionate about sound, the young Jarre applied to the Musical Research Group in 1968: 200 candidates present themselves for 4 places. Jean-Michel Jarre passes the exam and joins the GRM, which is then the best school in the world concerning electro-acoustic music. Trained by Pierre Henry and Pierre Schaeffer, Jean-Michel Jarre discovers an.