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 Rite" in the autumn; the sketchbooks indicate that he had finished the outline of the final sacrificial dance on 17 November 1912. During the remaining months of winter he worked on the full orchestral score, which he signed and dated as "completed in Clarens, March 8, 1913". He showed the manuscript to Maurice Ravel, who was enthusiastic and predicted, in a letter to a friend, that the first performance of the "Le Sacre" would be as important as the 1902 premiere of Debussy's "Pelléas et Mélisande". After the orchestral rehearsals began in late March, Monteux drew the composer's attention to