I'm actually a compulsive improviser, so much so that it frequently disrupts allegedly "organised" practice. This time, I was doing a rehearsal session, taped it all, and had a little warmup for what I was really supposed to be doing

I've got to admit the improv has a certain debt to the Verdi-Liszt Il Trovatore, but I've played that paraphrase so many times it seems it's almost in my bloodstream. Anyway, hopefully it's entertaining enough.
All comments welcome, of course.