Interesting discussion. I no longer improvise to imitate established forms of composition. Doing so is very clever and it is the way I was first taught, but it can lead to thinking that improvisation is a sort of poor man's composition. Form is still very important to me but improvisation, owing to its spontaneous nature, can have forms which are dynamic and organic, with their source in instruction rather than data. This is in contrast to composition, where the form is frequently an architectural jelly mould into which musical matter is stuffed.
Wishing to avoid the extremes of randomness and a priori imposed structure I try to develop means of producing unpredictable but fully determined chaotic sequences (in the mathematical sense of the word) each of which contains the DNA, the instruction as it were, of the next. The idiom of the musical content, the notes, doesn't matter; any style can be treated in this spontaneous manner. Or more frequently perhaps, the process results in something entirely new, which keeps me thinking for months afterwards.
That makes me wonder how much other improvisors know what they are playing as they are playing it or whether like me, sometimes at least, what comes out is as much a surprise to me as anyone.
Some do know everything they are doing; my old teacher was like that. At the other end you have those who know nothing they are doing. I aim for a critical middle state wherein the conscious and the unconscious form a feedback loop. Improvisation without surprise and delight doesn't interest me in the sense that I cannot see its point, even though I respect its mental arithmetic. I can understand some folk entering a type of therapeutic state with random noodling ( I don't particularly like that word as it is usually used pejoratively but I can't think of a better one) but as I can get the same effect by sitting in my garden and contemplating, that approach won't quite do either.
I want much more from my improvisation than either of these unsatisfactory extremes.
If that is the first recording you have made, Rich, it's a very good start. Once the habit is established it's terribly compulsive. I think I've recorded almost seventy CDs since I retired two years ago and the rate is increasing.