Piano Sonata in A-flat major, D. 557 (Schubert)
I. Allegro moderato
The work is relatively short and a typical performance lasts just over 10 minutes.
The fact that the last movement is in the key of E-flat major rather than the tonic key of A-flat major is strong evidence that Schubert may have intended to add a fourth movement. At the time this was written it would have been just about unheard of for a sonata to end in a key other than its tonic.
The beginning resembles the opening of the menuetto, D. 380, Nr. 3.
- Tirimo, Martino. Schubert: The Complete Piano Sonatas. Vienna: Wiener Urtext Edition, 1997.
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