Measures 9 to 12

An ascending sequence will now takes us to the D Minor key. In this sequence the subject appears in both voices transformed by inversion:

In measures 11 and 12 the sequence from measures 3 and 4 is repeated with the following changes

• Invertible counterpoint (what was played by the upper voice is now played by the lower voice and viceversa).
• We are now in the D Minor key. Measures 3 and 4 took us from the C Major key to G Major (ascending fifth), now this sequence will take us from D Minor to A Minor (ascending fifth):

Listen to measures 11 to 12: