A minor, 3/8 time.

A fugal piece based on a concise subject developed through stepwise motion. At the beginning, the middle voice responds to the subject in the upper voice at the fifth (m. 5ff.), and the lower voice also presents the subject (m. 13). Following Interlude 1 (mm. 16-20), the second exposition (m. 21ff.) alternates between C major and A minor through the inversion (i.e., exchange) of the upper and middle voices. Here, a new contrapuntal subject based on arpeggiated chords is presented by the lower voice, determining the progression of the piece.

Furthermore, in Interlude 2 (mm. 36-40), a new motive including 32nd notes appears, forming a sequential progression with imitation between voices. Although this motive is primarily used only in the interludes, following the third exposition (mm. 41-55) and Interlude 3 (mm. 56-60), when the subject is presented again at the end of the piece, this interlude motive is combined as a counter-melody (m. 60ff.).