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 that the work's opening bassoon melody was derived from an anthology of Lithuanian folk songs, but maintained that this was his only borrowing from such sources; if other elements sounded like aboriginal folk music, he said, it was due to "some unconscious 'folk' memory". However, Morton has identified several more melodies in Part I as having their origins in the Lithuanian collection. More recently Richard Taruskin has discovered in the score an adapted tune from one of Rimsky-Korsakov's "One Hundred Russian National Songs". Taruskin notes the paradox whereby "The Rite", generally acknowledged as the most revolutionary of the composer's early