Jean-Jacques Perrey, born Jean Marcel Leroy on January 20, 1929, in Amiens, France, was a pioneering electronic music composer and performer. Renowned for his innovative use of the Ondioline and Moog synthesizer, he co-formed the duo Perrey and Kingsley, producing some of the earliest commercial recordings featuring the Moog. Perrey's whimsical and avant-garde compositions have left a lasting impact on electronic and pop music. He passed away on November 4, 2016, in Lausanne, Switzerland. ([en.wikipedia.org](https://en.wikipedia.org/wiki/Jean-Jacques_Perrey?utm_source=openai)) Gilbert Sigrist, born on February 27, 1938, in Belfort, France, was a distinguished pianist and conductor. He notably accompanied celebrated artists such as Gilbert Bécaud, Charles Aznavour, and Barbara. Sigrist also collaborated with Jean-Jacques Perrey on the 1976 album "Dynamoog." His versatile talent enriched the French music scene until his passing on May 2, 2020, in Montbéliard, France. ([en.wikipedia.org](https://en.wikipedia.org/wiki/Gilbert_Sigrist?utm_source=openai))