Premise: French opera is one of Europe's most important operatic traditions, containing works by composers of the stature of Rameau, Berlioz, Bizet, Debussy, Poulenc and Messiaen. Many foreign-born composers have played a part in the French tradition as well, including Lully, Gluck, Salieri, Cherubini, Rossini, Meyerbeer, Offenbach and Verdi.
Hypothesis: French opera allows input from foreign-born composers.