With these three volumes Wiener Urtext Edition presents the first critical edition of Schubert's entire Piano sonata output published in chrono-logical order. The musical text newly revised from the original sources is accompanied by articles giving a history of the work details on Schubert's Piano writing and his instruments and tips on authentic performance practice. The editorial approach is explained in a critical commentary. The third volume contains the later sonatas composed in Schubert's final years (1825-1828) D 850 D 894 D 958 D 959 and D 960.