It's Paul Jeanjean time again! Here is a recording of the 9th etude from the Book of 18. This performance is from a recital I gave a few years ago. I am playing a Behn Vintage model A with a cane reed.
This etude, in 6/4, uses tied notes and triplet subdivisions to create a swinging, floating feeling. The pastoral little theme in the beginning quickly changes to something much more angst-ridden emotionally, before returning to the first theme again an octave higher. Jeanjean continues to develop these ideas through a long buildup of musical intensity, which peaks about halfway through and returns quietly again to the first theme. The coda contains several dynamic control challenges, especially the last note, a pianissimo altissimo g.