A gutsy move on the filmmakers' part, by not really having a narrative or informative documentary with interviews and facts. It seemed kind of aimless and uninteresting about 30 minutes in... but if you stick with it you realize this is the most realistic documentary one can make; no one is acting phony in front of the cameras or trying to express how important they are... we just simply watch what masters of their craft do to create their art.
It leaves you with a satisfied palate.