Ballets Russes at a time when he was virtually unknown to compose the music for "The Firebird", after the composer Anatoly Lyadov proved unreliable, and this was instrumental in launching Stravinsky's career in Europe and the United States of America. Stravinsky's early ballet scores were the subject of much discussion. "The Firebird" (1910) was seen as an astonishingly accomplished work for such a young artist (Debussy is said to have remarked drily: "Well, you've got to start somewhere!"). Many contemporary audiences found "Petrushka" (1911) to be almost unbearably dissonant and confused. "The Rite of Spring" (1913) nearly caused an audience riot. It
The Rite of Spring the disturbances, while deplorable, were merely "a rowdy debate" between two ill-mannered factions. Emile Raudin, of "Les Marges", who had barely heard the music, wrote: "Couldn't we ask M. Astruc ... to set aside one performance for well-intentioned spectators? ... We could at least propose to evict the female element". The composer Alfredo Casella thought that the demonstrations were aimed at Nijinsky's choreography rather than at the music, a view shared by the critic Michel-Dimitri Calvocoressi, who wrote: "The idea was excellent, but was not successfully carried out". Calvocoressi failed to observe any direct hostility to the composer—unlike, he said,