Ferdinand Herold
Clash of the Wolves
He never wrote an opera.
Mozart
Andrew Lloyd Webber wrote this modern opera.
Wolfgang Amadeus Mozart wrote the music for the opera Così fan tutte.
Raymond Briggs wrote "The Snowman" (in 1978).
The opera Mefistofele was written by the Italian composer Arrigo Boito.
Pyotr Tchaikovsky
josplin
Giancarlo Menotti.
Gaston Leroux wrote the original book of Phantom of the Opera, but it was later made into a film/play by Andrew Lloyd Webber, who also wrote the music for it.
The Italian seria (drama) opera in two acts 'Idomeneo'.