Boundless: that’s how one might describe these sonatas by Sergei Prokofiev, Mieczysław Weinberg, Leonard Bernstein, and Francis Poulenc. All of them, except the one by Poulenc, were composed during the Second World War, each exploring in a different way the boundaries of the genre. While Weinberg draws on klezmer, the music of his childhood, and Bernstein on jazz, Prokofiev and Poulenc choose a classical language treated with great freedom. Prokofiev’s Flute Sonata in D major is presented here in a new transcription for clarinet. Clarinetist Pablo Barragán and pianist Sophie Pacini form a duo that is dynamic and refined; they are perfectly at home in this repertoire.