from Music thing and YouTube:

A video of a surface being subjected to audio frequencies with dry rice put on top and as the frequencies change, so does the patterns of the rice. It’s both beautiful and one of those things that lets you see the basic building blocks of life, very much like crystals growing.

Please be cautious with you volume as they go through the frequency range, some of the notes are somewhat piercing…

Incredible spooky video about resonance (and rice).