The performance of ”The Connection and Interaction” was combine music, video, and dance. The work presents two application music works ”Flinty” and ”The Track”. From the view of application music and cross domain in performing Arts range, dance show the body motion, and the video changes the environment of the stage. Video emerges and changes color, scenes, and lines or figures of the stage. This research discusses how to combine or connection many kinds of art they are cross domain Also research the notions of the develops of postmodern music and the influences of video-music, or the harmony of dance and video. Because dance and video are tend to science and technology, a new way of arts' phenomenon. We try to find the extending points, develop possibility, and connections of new arts, in addition, we hope to delay performance arts interfaces.