I believe the answer is "change to meet the needs of a modern society".
French opera is one of Europe's most important operatic traditions, containing works by composers of the stature of Rameau, Berlioz, Gounod, Bizet, Massenet, Debussy, Ravel, Poulenc and Messiaen.
Hope this helps :)
Have a great day!
Radios, records and,films i think