The fugue subject in the ritornello is "hidden" in the main fugue subject ("soggetto cavato dalle note del tema"): its constituent notes—A, F, E, D, C, B, A, G, A, B—can be picked out in each of the corresponding crotchet and minim groups of triplets in the main subject. Other departures from BWV 894/2 include a number of virtuosic passages in the harpsichord, with demisemiquaver runs, semiquavers in the triplets and finally semiquavers replacing the triplets, culminating in a cadenza for the harpsichord.