but if you spent some time looking at how different they are when different music is applied to them, you can see for yourself, the effects of music on water.
Is the music played during the crystalization process or just before.
In other words, do you take a drop of water, play music, then let it sit, then freeze it, or do you freeze it while you play music.
I suspect it's the later. Sound travels in waves, these waves can effect the alignment of crystals as they form.
A good test would be to repeat this process using completely neutral tones, single musical notes for example, and see the results.