[Tekst dostępny tylko w języku angielskim] Dance and video performance.In certain states of consciousness (dreams for example), the humanbeing experiences another body, a double of himself, in which he livesvarious experiments, most often without control. Sometimes both states(the physical body, and the other body) are felt simultaneously.A camera captures the dancer’s picture from a chosen viewpoint, thatis shifted from the spectator’s viewpoint. Then the video-performerrecomposes video in real-time and displays the processedvideo on a transparent screen for the dancer and the audience.DROP CROSSING’s creation implied the development of a « videoinstrument », which is a graphic interface allowing to manipulate theframes in an intuitive way, using a touchscreen. While at first sightthe work on computer may seem to restrict physical expression, herethe video-performer feelings permit interactive playing and thereforeimprovisation.