I don't like all of Collier's stuff either, but the tunes I linked, especially "Little Blue" (Mahogany) are really beautiful. His work requires headphones for in-depth audition of the subtle shadings in the harmonies. I always liked the Bobby McFerrin's wonderful demonstration of how a the brain can anticipate the next natural harmonic step in a sequence ( see #3394 here).^^ Not a particular fan of Collier. I'm sure he's technically good, and I've heard he's more if a musician's musician, but I listen to his stuff and find it trying to be too clever rather than simply enjoyable.