Schubert’s piano sonatas were neglected for a very long time. They were deemed derivative of Beethoven, and structurally not very good. Only in the late 20th century did they get more attention, and now they are considered core solo piano works. I suppose this is an early example then, as this recording is from 1970.
Of the 28 sonatas known so far, only three were published during the composer’s lifetime. You might spot this in the opus numbering: the Deutsch catalogue number is high, the opus number low. Opus numbers were given by the publisher upon publication. The catalogue was originally published in 1951 but kept up to date as more sonatas were discovered. This so called Deutsch (on this record it is called DV: Deutsch Verzeignis) aims to create a chronological ordering, per genre, of all of Schubert’s works.
The 537 was written in 1817, the latter eight years later. Where the earlier sonata is noticeably more traditional and following Beethoven, in 1825 Schubert seems to have found his own voice. Both works are written in the same key of A minor.