Interactivity, Object-oriented, Gesture, Sound Installation, Cybernetics Abstract: This article is intended to raise some points of interest and mark out some pointers for alternative approaches to the design and execution of interactive music systems and artworks which pursue interaction that: • does not include any pre-defined pathways, • takes dynamic morphology as its foundation, and • implements dynamic software infrastructures, built on the object-oriented model, providing dynamic instrument instantiation, orchestration and timbral control. It is intended that such design would be a precursor to a new approach to interactivity that responds more directly and uniquely to those who engage in the work, and in so doing rewards them more richly for their time, energy and enthusiasm.