Shakeperan
Mozart and Rossini, among others.
Igor Stravinsky
Mozart was a composer, not a writer. His last known piece he wrote was Symphony No. 41.
BeeTHoven composed one opera, Fidelio. It is sometimes considered that he wrote two, the first version of Fidelio being a full-score opera entitled Leonore.
Libretto by Lorenzo da Ponte, music by Wolfgang Amadeus Mozart.
His most famous are Le Nozze di Figaro, The Magic Flute, Così fan tutte & Don Giovanni. Go to this page, http://en.wikipedia.org/wiki/Magic_flute, and you can read an entire list of his productions.
Mozart
The Italian seria (drama) opera in two acts 'Idomeneo'.
Don GiovanniDon Giovanni has elements of opera buffa, but he called it a dramma giocosa, or a humorous drama. Cosi Fan Tutte is an opera buffa by Mozart.
Andrew Lloyd Webber wrote this modern opera.
The opera Mefistofele was written by the Italian composer Arrigo Boito.
Johann Sebastian Bach.
Verdi
American composer John Adams.
There is a misunderstanding that John Gay wrote an opera called The Beggar's Opera. This is not the case. Gay was born in Barnstaple, Devon , England and was a poet, not a composer. The words to The Beggar's Opera were written by Gay but the music was by Pepusch ( a German composer )
Claudio Monteverdi was the bridge composer between the Renaissance Era to the Baroque Era.
Andrew Lloyd Webber.
(Richard) Wagner