This rather interesting set of solo soprano saxophone explorations by
David Liebman (one of the greats on that instrument) has an odd concept that works.
Liebman plays a six-part suite that has titles of "Roots," "Trunk," "Limbs," "Branches," "Twigs," and "Leaves" and then does a second version, playing the sections in the opposite order. The sections farthest from "Roots" are the most advanced, although all of these movements are fairly free. It's well worth several listens. ~ Scott Yanow