Some commentators describe the first movement of the sonata as by far the most interesting, as it shows Schubert breaking away from the restrictions on harmonic progressions his teacher Antonio Salieri had imposed for vocal music,[3] and as one of his happiest inspirations, prefiguring his later trade marks, while the remaining two movements are described as somewhat run of the mill.
[6] D 154, an unfinished Allegro in E major, composed 11 February 1815, and like D 157 titled "Sonate" in the autograph, is usually seen as an early version of the first movement of D 157.
[11] There were no publications of this work before the Breitkopf & Härtel complete edition of the end of the 19th century, known as the Alte Gesammtausgabe (AGA).
[6] The autograph of D 154 is titled Sonate and has 11 February 1815 as date at the end of the single and incomplete Allegro movement.
1 of the Piano Sonatas volume (Series X) of the Kritisch durchgesehene Gesammtausgabe published by Breitkopf & Härtel.