A work from August 1817, this four-movement sonata concludes a prolific year for piano sonatas. In the first movement of this sonata, modulations accompanied by changes in key signatures are prominent (though key signatures often do not align with the actual keys). In the exposition, four keys (B major, G major, E major, B major [F-sharp major]) are explored; in the development, also four keys (B major [minor], D major, C major [E-flat major], B major); and the recapitulation, which begins in E major despite retaining the B major key signature, also traverses four keys (E major, C major, A major, B major) before returning to the tonic. Furthermore, throughout the entire movement, the dotted-rhythm material of the first theme is motivically developed. In terms of motivic manipulation, it is a work that suggests the influence of Beethoven.