Personally, I've found one of the more stimulating ways of playing in recent times has been to kind of move outside the free improvised area and work with people who are probably improvisers but they have a particular way of working.
“As I've said, I've been advised not to get into the specifics out there. Is there some truth out there? Yes. Is there a lot of falsehood out there? Absolutely.”
“Some day the workers will take possession of your city hall, and when we do, no child will be sacrificed on the altar of profit!”