K. 71 Allegro G major 4/4 2:10 (with repeats)

The piece begins with imitation between both hands, followed by perpetual motion sixteenth notes, a very common structural device.

Devices that enhance the harmonic color include the chromatic progression in measures 9-10 and the key changes at half-measure intervals in measures 17-18 (D→A→a).

In measures 9-10, the dominant seventh G2 repeatedly ascends to A2 instead of resolving downwards immediately, and the dominant is emphasized along with a pedal point, establishing the tonic key. However, in the corresponding measures 17-18, it does not stabilize in the target major key but immediately modulates to the parallel minor.

This is another instance where harmonic monotony is avoided.