The thing about free jazz is that it is very much like abstract expressionist painting. Many an inexperienced museum goer will spot a Jackson Pollock and say to herself, "I coulda done that." Actually, you couldn't. Same thing with free jazz. From a distance, it's all hubbub and din, but try your hand at it, and you're just creating babel. In the hands of masters like the Flow Trio and their guest Joe McPhee, that cacophony becomes a beautiful thing, like that Pollock painting, discharging its energy.