Easy Key Signature, Funky Fugue

The P&F No. 15 in G Major, BWV 860.  Who wouldn’t want to learn a P&F in G?  Anyone not wanting to memorize a four-page fugue. The prelude is quite attainable, followed by a special fugue from which I’ve shielded my students unfairly.  The fugue’s subject is four measures and 30 notes long, a seriously involved fugue.  (When I had to produce a fugue in college, I made sure to make it short and trite, the easier to build it.)  But this subject is exciting, and Bach presents it several times upside down (intervals inverted) — fun!  I have heard that Bach also presented some fugues backward, but I’ve yet to find a backward subject (last note first, etc) in my crazy crossword project of finding all Bach’s subjects hidden in WTCI&II.  Given the ease of the prelude and the satisfying challenge of the fugue, I can think of several students who should give this P&F in G a fling.