In New York City's Chinatown, subject Suat Ling Chua's morning exercise is to practice the hula hoop. When Christian Jankowski first saw this woman he immediately got the idea to shoot Rooftop Routine. In the short video, Chua leads the group and dictates the movements that each participant has to repeat. Only one person of the group can directly see Chua and thus each person mimics another from roof to roof, altering the choreography after each passage like in a play of "Chinese whispers." With this performance, Jankowski explores the social organization of a specific context. It brings together people of several buildings in the same project beyond isolation and social barriers of the urban environment. "In a work, new things, unknown things can happen. The important thing is to initiate a project to bring together the right people. Then the mechanism takes unpredictable paths. Until...voila!..the work is done," says Jankowski.