POURQUOI les notes s'appellent Do Ré Mi ?

Why are musical notes called Do re mi fa sol la si do in French and A B C D E F G in English? Opening credits and background music: Frank Cotty TIKTOK: https://www.tiktok.com/@frankcotty?la... INSTAGRAM:   / frankcotty   FACEBOOK:   / frank-cotty-1575673299159145   TWITTER:   / frankcotty   SOUNDCLOUD (original songs):   / frankcotty   SOUNDCLOUD (covers):   / frenchcovers   MERCHANDISE: https://shop.spreadshirt.fr/frankcotty DEEZER: https://www.deezer.com/fr/artist/487809 SPOTIFY: https://open.spotify.com/artist/7H8be... APPLE MUSIC: https://music.apple.com/fr/artist/fra... DISCORD:   / discord   BUSINESS INQUIRIES: [email protected] If you're reading this, ask me a new "why" related to music, and I might answer it in a future episode...