III. Menuetto, allegro (第三乐章 小步舞曲，快板)-Gary Graffman

Menuetto: Allegro – Trio. This is a somber movement, quite distinct from the typical atmosphere of dance movements. It is relatively conservative in its key scheme, moving to the relative major key and back to the tonic. In the B section, a sequence of hemiolas is interrupted by a dramatic interpolation in A-flat major, referencing the departure to this key in the opening of the Allegro with the added minor 6th. The second A section is a transformation of the first, interrupted every four bars by a silent bar, creating a mysterious atmosphere. The trio is in A-flat major, ternary form, with a B section beginning in E-flat major colored by its own minor 6th, and modulating to G-flat major via the parallel minor.