Commenter Jim P has a really insightful and relevant comment:

If you want to find the secrets of the universe, think in terms of energy, frequency and vibration.” –Nikola Tesla As a synthesizer player and programmer, I am often at the intersection of music, mathematics and physics.  And cymatics — the visual study of waveforms — is right there with me at that intersection point. Simply awesome music and stunning visuals.

And this is an excerpt on the phenomenon by wikipedia:

Cymatics (from Greek: κῦμα “wave”) is the study of visible sound co vibration, a subset of modal phenomena. Typically the surface of a plate, diaphragm, or membrane is vibrated, and regions of maximum and minimum displacement are made visible in a thin coating of particles, paste, or liquid. Different patterns emerge in the excitatory medium depending on the geometry of the plate and the driving frequency. (SOURCE: Wikipedia)