In Disparity two performers located in different cities follow a set of improvisation instructions in order to establish a network musical communication. The image of each performer on the stage are blended into one, creating an assambled image of the two performances, a virtual place where the two sites are present. For each stage the resultant image is different and will be projected in 1:1 scale besides the performer. The video process is driven by the own performers play, routing some musical events to video events. Dis-parity uses especialized network technologies to transmit, receive video, audio and data in a de-centrañized topology.