The fragments of the sonata survived in Schubert's manuscripts, and later the work was collected and published in its incomplete form in 1861.
Andante C minor, 6/8 time, five-part rondo form Duration approximately 10 minutes III.
Fragment (ends 32 measures after the development starts) Even in this truncated form, the sonata takes approximately 30 to 35 minutes to perform.
Ernst Krenek outlined the structure of each of the work's four movements in notes that he contributed to a recording by Ray Lev in 1947.
According to Krenek:[3] Given its large scope and the extent of material that Schubert left for the incomplete movements, this sonata has inspired various composers and performers to undertake completions.