Composed in February 1823, this work finally emerged after a long hiatus in piano sonatas. The previous work dates back to D664 from 1819 (though some theories suggest 1825) or the five sonatas from 1817. However, in the preceding year, 1822, Schubert composed the Wanderer Fantasy, which contained sonata-like elements, suggesting he had gained confidence in the piano sonata genre. This A minor sonata, while inheriting the virtuosity of that fantasy, also pursued introspective depth.

First Movement: Allegro giusto, A minor, 4/4 time. Sonata form.

It begins with a dark and ominous theme, and the entire movement is dominated by a melodic figure that seems to drag one down just as one attempts to ascend. Furthermore, contrasting elements such as unisons and thick chords, long notes and dotted rhythms, and disjunct motion alongside repeated notes and conjunct motion coexist, forming a dramatic movement.

Second Movement: Andante, F major, 4/4 time.

This movement, with its gentle, comforting theme and high-register sonorities, creates an impression reminiscent of Beethoven's late works. Note the bright, upward-moving theme, which contrasts with the preceding movement.

Third Movement: Allegro vivace, A minor, 4/3 time. Rondo-sonata form.

A canonic theme, unusual for Schubert, who was skilled in chordal writing, alternates with a contrasting second theme that displays his characteristic graceful harmony. However, the middle section is developed, resulting in a sonata-like form.