Bets ( L' Occitanie, France ) brought this to my attention , so , I'll make a few comments I did a bit of poking around ,through the work of late nineteenth century French composers ( Ravel , Debussy , Saint-Saens , Franck ,Faure . etc .) but nothing hit . Unless one knows any composition specifically , the trick is to try to narrow things down by compositional style . Even then , the overall quantity of music literature is so vast , it can be like hunting for the proverbial needle . Also ,when music is used in commercial , background applications , it is possible that it is something recent , in the style of the period its meant to represent , While I'm not certain about this , a composition I found online , sounds similar ,with chordal changes much like those on the video . Give this a try - https://youtu.be/3qOeNnhUb4A