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The Piano Sonata in E-flat major 568 by Franz Schubert is a sonata for solo piano. It is a revision and completion of the Sonata in D-flat major D. 567. The D-flat major version was composed in June 1817, while the E-flat major revision and completion, published in 1829 after Schubert's death as Op. posth. 122, dates from sometime around 1826.