The running semiquaver passagework is an accelerated continuation of the quaver passagework of the second section; occasionally it incorporates motifs from the second section.
The ornamented melody in crotchets sings in the soprano above a flowing legato semiquaver accompaniment and gently pulsating repeated quavers in the pedal continuo.
The following "allegro" is a short four-part fugue which concludes with the fugal subject replaced by an elaborated semiquaver version of the first two bars of the original subject.
There is a slight diversion in the tonic major involving dialogue between a dotted, staccato rhythm and a gentle, rather playful set of semiquaver triplets.