Inside a train , likely a peak hour, crowded of commuters, each absorbed in its own concern, a musician perfectly dressed as for a theater exhibition performs 4’33” by John Cage on a toy piano. Someone realizes that something unusual happens, and leaves a small place around the performer; someone leaves free space for the camera recording the event. The noise of the train makes the execution perfect in the Cage spirit. At the end, the performer assistant claps; the toy piano stays in the small free space left by the commuters, everyone with its own concern.