I'm doing music research for a new 
          project I'm putting together. I need to construct an audio study 
          of free jazz and/or avant-garde guitar/bass/drum trios...the more 
          obscure the better.
           
          This is what I have so far, not all of 
          which is that far out, but it's the best I can do.  Those with an 
          * next to them are not really free jazz or avant-garde, but a good 
          representation of the instrumentation in modern jazz.
           
          Bill Frisell - Live
          Joe Morris - Antennae and Symbolic 
          Gesture
          John Abercrombie - In the Moment, 
          November, and self titled (with Marc Johnson and Peter 
          Erskine)
          John Scofield - Out Like a Light 
          *
          John Stowell -Somewhere *
          Lorne Lofskey - Self Titled 
*
          Mike Stern - Standards *
          Nels Cline Trio - Ground
          Pat Metheny - Trio Live *
           
          Any others I can add? There must be more 
          than this. Oddly, this is a difficult subject to search for on Google 
          and music sites.  There needs to be a music search engine that 
          allows you to search by genre and exact instrumentation. 
           
          Kris