The piece soon turns into declamation, led by a voice in the upper register, and after a rapid scale in the right hand, there is a quick reprise of the main theme.
The middle section, in the distant key of A♭ major, is marked sostenuto and legatissimo.
Though it begins softly, it can also be described as inhibited, showing unease, triggered by the play of syncopation of the left-hand chords.
Furthermore, the opening melody is embellished by continuous figuration including many trills, grace notes and runs.
In the anglophone world, the B major nocturne is named the ‘Tuberose’, an exotic greenhouse flower.
In their reprisal, these two melodic themes are accompanied by slightly differing harmonies with modified embellishment in the right hand.
[5] Critics maintain that the pieces display Chopin's late compositional style, which is characterized by masterful use of counterpoint and new explorations in harmony and musical structure.