To most people, the subway is simply a practical mode of transportation that quickly and safely takes them from one location to another. To film maker Timo Novotny ("Life in Loops") it's the artery of a city: of vital importance to a healthy perfusion of the tissue. It is a place where loneliness and community go hand in hand, a moment to catch your breath from the hectic life above ground. "Trains of thoughts"is a rhythmically audiovisual essay with a strong soundtrack by Sofa Surfers, often rightfully described as the Austrian massive attack.