As with the previous sonata, it is unclear why Beethoven wrote Op. 101. The earliest known sketches are on leaves that once formed the parts of the Scheide Sketchbook of 1815–16. It shows the first movement already well developed and notated as an extended draft in score, and there are also a few preliminary ideas for the final Allegro. Beethoven himself described this sonata, composed in the town of Baden, just south of Vienna, during the summer of 1816, as "a series of impressions and reveries." The more intimate nature of the late sonatas probably has some connection with his deafness, which by this stage was almost total, isolating him from society so completely that his only means of communicating with friends and visitors was via notebooks. Beethoven offered the sonata for publication in a letter to Breitkopf and Härtel on July 19, 1816, when it was still far from complete. Eventually it was sold to the local Viennese publisher Sigmond Anton Steiner, after its completion. It was published in January 1817, and would appear in public the following month after delays. Composition The Piano Sonata No. 28, Op. 101 is the first of the series of Beethoven's "Late Period" sonatas (although sometimes Op. 90 is considered the first), when his music moved in a new direction toward a more personal, intimate, sometimes even introspective, realm of freedom and fantasy. In this period he had achieved a complete mastery of form, texture and tonality and was subverting the very conventions he had mastered to create works of remarkable profundity and beauty. It is also characteristic of these late works to incorporate contrapuntal techniques (e.g. canon and fugue) into the sonata form. For the first time Beethoven used the German term Hammerklavier to refer to the piano (although it was the next of his sonatas, Op. 106, that became widely known as the Hammerklavier sonata). This was the only one of his 32 sonatas that Beethoven ever saw played publicly; this was in 1816, and the performer was a bank official and musical dilettante. See also Piano history and musical performance – Beethoven's unusual pedal direction in the third movement References External links A lecture by András Schiff on Beethoven's piano sonata Op. 101 Beethoven Piano Sonata No. 28, Op. 101, Creation history and discussion of musical content at Raptus Association Recording by Paavali Jumppanen, piano from the Isabella Stewart Gardner