Turkish State Opera and Ballet which was subsequently transformed into Ankara State Conservatory. The two lecturers were offered permanent posts at the conservatory, an offer which Paul Hindemith was not able to accept. Nevertheless, he kept visiting Ankara and inspecting the activities at the music school. Carl Ebert stayed in Ankara as the director of the conservatory theatre school and opera studio for the following nine years. On May 16, 1940, the State Conservatory was firmly established under law, comprising music, opera, ballet, and theatre schools. The first performance staged by the students of the conservatory was Mozart's one-act comic opera Bastien und Bastienne, performed
Comic opera 18th century. In the 19th century, Russian comic opera was further developed by Alexey Verstovsky who composed more 30 opera-vaudevilles and 6 grand operas (most of them with spoken dialogue). Later, Modest Mussorgsky worked on two comic operas, "The Fair at Sorochyntsi" and "Zhenitba" ("The Marriage"), which he left unfinished (they were completed only in the 20th century). Pyotr Tchaikovsky wrote a comic opera, "Cherevichki" (after Nikolai Gogol, 1885, 1887 Moscow). Nikolai Rimsky-Korsakov composed "May Night" 1878–1879 and "The Golden Cockerel" 1906–1907. In the 20th century, the best examples of comic opera by Russian composers were Igor Stravinsky's "Mavra" (1922)