Not a toy - this is real music theory – Musical DNA Review

I'm impressed how well Musical DNA expresses the natural symmetries in western music, while supporting a natural-feeling play mechanic. There have really only been a handful of visual notations for 12-tone music since the dawn of western music. It's no small deal, therefore, that this app is nothing less than a new way to think about and visualize western musical theory.
Review by Maximus SF on Musical DNA.