Wandering around playing music: it's every musician's dream. This new invention, dubbed the StapStrument [Step Instrument], turns the dream into reality. A foot pump is attached to each foot and they blow air into a pair of organ pipes. You then step your own music together. With a jaunty pace the rhythm speeds up; stand still and there is silence. The fun really starts when you play with others: you can be a StapStrument orchestra! With simple movements and arrangements, StapStrument gives you the opportunity to compose and make music with others.