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I could have embedded all these but i thought it best just to provide a link to the source. A wonderful documentary on Olson that deserves more attention.
http://www.polisisthis.com/watch-now.html
While much has been said about his relation and influence on musical improvisation. I think his work has implication for Intuitive music in general. Not to mention looking at the possibilities of musical passages as being related by their 'energy' as opposed to ' technical systems' that often fail to be comprehensible. It surely leads us back to a phenomenological experience of it.