Question: What Stravinsky ballet featured in a 2004 documentary caused a near-riot when it was first performed in 1913?
Sentence (from "Agon (ballet)"): The composition's long gestation period covers an interesting juncture in Stravinsky's composing career, in which he moved from a diatonic musical language to one based on twelve-tone technique; the music of the ballet thus demonstrates a unique symbiosis of musical idioms.
Relevant evidence: No