Virtual reality and interactive media applications are a great testing ground for novel audio applications. Bizarre control dynamics and immersive feedback stimulus make for an engaging method of challenge and reward. But a question of what areas of sound are to be manipulated remains open, normal synthesis algorithms are build on the morphological relationships related to their early construction… they were made for keyboards and circuits. With natural user interfaces it is possible to explore more physical relationships to sound control. Along this line I found some nice visuals and sounds of physical acoustic relationships. Whether these can be implemented in a controllable and rewarding fashion is another question…