The ninth of Edvard Grieg's ten sets of highly accessible piano miniatures, the Lyric Pieces, was his Op. 68, written in 1898-99 and published in 1899. The second piece in Op. 68 is titled "Grandmother's Menuet." It is delicate and whimsical, presumably in the familiar mould of humorous "old people's" dances, the best known of that type being the "Großvater Tanz," a traditional tune familiar to everyone even nowadays through its quotation in the "Grandfather's Dance" in Act 1 of
The Nutcracker.
The design is ABA'BA', where each version of A is 16 bars (8 + 8 where the second eight repeats the first an octave higher), B is 20 bars, A' is also 16 bars but the second eight form a stuttering repetition of the cadence (to be discussed below), and B, then A', are literally reprised.
The opening is striking -- and is referenced in undergraduate textbooks -- for its secondary dominant ninth chord (V9 or V), a "proper" harmony whose ninth resolves directly into the next chord. (On the dominant ninth chord and its several types, see my blog
On the Dominant Ninth Chord.) Despite the positioning of ^3, as B4, over that secondary harmony, a traditional Schenkerian reading would assume a displacement, as if the B4 has been shifted over from its proper place above an implied I on the first beat. In that case, ^2 is first offered in the foreground in bar 2 but then implied in the middleground in bar 4, initiating a leading-tone third-line with G4 in bar 5 and F#4 in bar 7.
I prefer a more literal minded reading, as shown below. The stable note at the opening is ^1/^8, as G4, and we give that preference in the unfolding of G4-B4. The unfolding reverses itself in bar 5 in the sense that the lower note is now subordinate to the higher one, which is again G4. Although I have shown the ending as ^6-^7-^8, I would probably simplify the reading overall to ^8-^7-^8, or G4 in bar 1, F#4 in bar 7, and G4 in bar 8.
Section B, on the other hand, pounds away at B4 and sometimes B5 for all of its twenty bars. Since the texture is quite different from A, is entirely in octaves, as shown in the beginning, and it's clear that the underlying key is E minor, I don't hear this section as promoting B4 in the main section.
The altered reprise of A in its second phase repeats the cadential phrase but stops before the tonic (see the first one-bar grand pause). Single-bar repetitions occur an octave higher, then an octave lower before the tonic concludes. The overall effect, of course, is to give exaggerated attention to the rising cadence figure.