I remember hearing about this concept a few years back. Its pretty dope - the ‘Vinyl Workout’ was created by British artist and programmer, Theo Watson for the Rotterdam electroic music festival. Its basically a giant record player that is projected onto the floor and controlled interactively by moving around on the surface. By using custom software and cameras apparently the record actually responds to the speed of your movement whether youre walking or running. It even responds if you change direction and plays backwards if you move counter clockwise.