


ah, at last, something I can understand... Wade, do you want to do the backing track, or shall I?
One of the big flaws of the 'Improvise Over The Changes' way of doing things is that there's always the danger that you will tend to improvise the same way on every tune and be so busy concentrating on the changes that you'll forget the individual nature of melody and what the piece is meant to be about. Many of the more astute jazz musicians of the 50's realised that playing over the changes all the time on the same old standards wasn't adequate and some other approach was needed. This is kind of what Ornette Coleman was getting at, that you have to improvise on each piece of music differently and try to express the essence of what the tune is about. In his case the harmony was a result of the interplay of the musicians and not a fixed framework and the melody became the framework to play with.
To a greater or lesser extent, this approach influenced many other musicians including Sonny Rollins, John Coltrane, Eric Dolphy, Miles Davis, and Charles Mingus - although those latter two publicly scorned Ornette, they did absorb some of his ideas into their own music.... listen to the Dolphy/ Mingus bass clarinet and double bass improvisations on recordings like 'Mingus In Antibes' and you can hear them talking, joking, laughing and swearing at each other using their instruments. Learning to make your instrument talk is a useful skill if you're interested in self expression. It's not only about what you say, but also how you say it.
My point being, that the freedom that is (over) exemplified in the Ono/Zorn duet above is something that is neither encouraged nor allowed to flourish in jazz anymore. The vocalised cries and exuberant yelps of New Orleans are no longer welcome, the free spirited song of Bird in full flight has been reduced down to the dullest possible methodology and if people ever do express something of their inner feelings in jazz anymore then they do it in the politest possible terms.
If musicians don't have much to say for themselves, then don't expect anyone to want to listen - would anyone go and see a young comedian doing a routine by a 1950's comic?
When you think about it, most stand up comedians are far better improvisers than most musicians and they manage to entertain as well. We've got a lot to learn that isn't in the textbooks.