To create a four-measure transition to the slower section, I used a motive from the first measure of the anthem in the left hand of the piano and answered it with the motive inverted in the right hand of the piano. The idea is extended freely as it modulates to F major and the Andante.
My idea for the Andante was to explore the feminine cadence style trait if the polonaise. A feminine cadence resolves on a weak beat instead of a strong beat (example: dominant chord on beat 1 and tonic chord on beat 2). I also used the same dotted rhythm motive I used in the transition as the basis for a free melody for this section. To break up the regularity of phrasing, there are meter changes, irregular length phrases, and a forte sextuplet that adds and element of surprise. Measures 113 to 120 is a variation of the second part of the anthem that incorporates elements of the measures preceding it.A sudden modulation using the sextuplet idea followed by a fragment of the Andante melody transitions the listener to the Lento.
The Lento is the most lyrical section of the piece. It is also freely based on the opening rising motive of the anthem but without the middle note. Lush harmony that contains some borrowed chords for chromatic interest permeates this section.
To see and hear what I have discussed, go to http://www.cooppress.net/Fantasie_Variations_blog.html. You will be viewing a transposed score.
As always, your comments are appreciated.