Seeker_UK
Feelin' nearly faded as my jeans
I know what you mean, more a experimental stream of warped freedom. Evan Parker plays features heavily (Spontaneous music ensemble etc) the LP is also produced by Denis Preston so whilst it hangs on the fringes, it's shares a great deal of Jazz DNA, probably more so than any other form it could be apportioned to.
ISWYM - Basil has a jazz background for sure and there are a few of his albums which are more jazzy ('Abstractions Of The Industrial North' and 'Charcoal Sketches' spring to mind) but those two 'Worlds Within Worlds' are way beyond even the freest SME or Music Improvisation Company composition.