Some of my composition students are currently in Gretchen Foley's fiercely graded 18th century counterpoint class. She asked me if I would pull out my final project and give her a copy. I had a little bit of practice time on Spring Break.
I took the NPR theme and turned it into the kind of subject you would use for a gigue fugue. I then used the Bach G Major fugue BWV 541 as a sort of template for the structure. All of the subject entries are annotated, and I even managed some stretto entrances at the end.
The playing is a little rough in patches, but the beast is dreadfully difficult to play. I originally thought the theme was by the ubiquitous B.J. Liederman, but it turns out it was by Voegeli.