Each Koch Snowflake generates a random melody, (using the current tempo, key and root note as inputs). The darker regions indicate lower notes, the brighter regions higher ones. You can use any instrument on the chimes. The L-Systems we use to create the fractals visually also determine what sounds each fractal will make when you interact with it.
The snowflakes are visually stunning, pleasant to listen to and hand like wind-chimes wherever you place them.