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Trois mouvements perpétuels, a set of three piano pieces, was Poulenc's first major composition. Written in 1918-1919, it showcased his early modernist style, characterized by rhythmic vitality, melodic angularity, and harmonic dissonance. The pieces' perpetual motion and relentless energy reflect the composer's youthful exuberance and the post-war era's spirit of innovation.