David Nemeth is a big supporter of Creative Commons and liberal licensing, who make abstract non-traditional music in his own right. His website "Acts of Silence" is an excellent resource for folks who like to discover liberally-licensed music that does not color between the lines.

Though my music sometimes colors near the lines, but merely makes a mess of it, I was glad that David reviewed my new album "Constellation Blackbird". He
"gets" my music, and makes me think about what I was up to, a bit.

Here is David's review of "Operation Blackbird":

Acts of Silence Review: Gurdonark, Constellation Blackbird