two parts (mm. 1–5; 5–11); SK: PAC at m. 5, HK: PAC at m. 11 (eliding with beginning of the exposition)
a relatively tight-knit modulating sentence
a much looser sentential form, leading to a kind of "internal premature dominant arrival" (in the sense of a subordinate theme) in the middle of m. 7, followed by a new cadential idea leading to an elided PAC; asymmetrical grouping structure; intense chromaticisim; modulation; premature dominant arrival
in its bipartite cadential organization, tonal organization, and distribution of melodic–motivic ideas, it resembles a small binary more than any other conventional theme-type