As jazz music plays, you see white blocks appear and disappear. This goes on for about a minute, then the blocks appear to be simple computer created shapes--much like Atari graphics from a few years later. They blink and move about until they ultimately turn into simple pictures of people who change colors and bounce about to the music. And then, after about four minutes, it ends.
This is the earliest film listed on IMDb for Zbig Rybczynski--a film he made in his early 20s. Because he was so young and the film so experimental, I won't bother rating it--it just wouldn't be fair and the film defies my ability to assign a numerical score. However, Rybczynski later went on to win an Oscar for "Tango" and so he had to start somewhere!