A work from May 1817. This year was truly a year of piano sonatas, with one work produced in March, two in June, and another in August, in addition to a fragmentary sonata in July. Sonata No. 5 is a smaller-scale work compared to previous sonatas, with all three movements lasting less than five minutes. Furthermore, given that the third movement does not return to the tonic key, there is a theory that a fourth movement might be missing, similar to Sonatas No. 1 and 2. However, in reality, the third movement, Allegro, which is in sonata form, possesses the character of a finale, and stylistically, the work can be considered complete in three movements.