Comic opera and humour, Offenbach's works were intended solely to amuse. Though generally well crafted and full of humorous satire and grand opera parodies, plots and characters in his works were often interchangeable. Given the frenetic pace at which he worked, Offenbach sometimes used the same material in more than one opera. Another Frenchman who took up this form was Charles Lecocq (1832–1918). The singspiel developed in 18th-century Vienna and spread throughout Austria and Germany. As in the French "opéra comique", the "singspiel" was an opera with spoken dialogue, and usually a comic subject, such as Mozart's "Die Entführung aus dem Serail
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)