Le mas (Canteloube) Acte II - Introduction (dir. le Conte) 

It lets me wonder what his Vercingetorix sounded like... Canteloube was the first composer to include the Ondes Martenot in an operatic work (Prelude of the 2nd act of Vercingetorix) and the two extracts sung by Georges Thill with the composer at the piano don't really showcase the orchestration... As for this recording, the whole thing is available on RU-vid, I put the link at the bottom of the description below the video.

So you did. Th​anks! @@erlangerleretour3964