As you can see, the French and the Italian note names follow the solfege tra-
dition of the 11th century Roman Catholic Church. Solfege was a system of
note reading invented by Father Guido D’Arezzo for teaching Gregorian chants,
forever immortalized by Julie Andrews in The Sound of Music: “Do re mi fa sol
la ti do.”
Chapter 19: Composing for Other Musicians 251