This is a live performance with real time sound and video processing. I question the way one can sense himself through a mirror effect provided by a video device. The movements of the body, in between performance and dance, is restrained in the space of a one square meter box which uptakes a video picture from below. This picture is broadcast on a background screen, showing the audience a under scanned, inverted and blurred vision of my perception. The sounds generated by the steps on the box are real time treated, creating a live concrete sound peace.