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 a series of flute trills that usher in the "Spring Rounds", in which a slow and laborious theme gradually rises to a dissonant fortissimo, a "ghastly caricature" of the episode's main tune. Brass and percussion predominate as the "Ritual of the Rival Tribes" begins. A tune emerges on tenor and bass tubas, leading after much repetition to the entry of the Sage's procession. The music then comes to a virtual halt, "bleached free of colour" (Hill), as the Sage blesses the earth. The "Dance of the Earth" then begins, bringing Part I to a close in a series of phrases