Review of La maladie de Sachs

I just have seen this little jewel and found sensible and full of human valours that make the world be proud. I liked everything and imagine the dificulties for mr. deville to prepare this unbelievable casting. and what to say for the drops of music inserted in the film... I need your help, can anyone tell me which piece of the baroque music used as score and who is the author of the music.