what musical notes look like...
Louviere vibrated the water with the amp by adjusting the generator's frequency. As he did so, he used his tuner to seek out the frequency of each of the 12 notes—A, B, C through G, plus the five halftones. While Louviere dialed the knobs, Brown stood on a ladder above the contraption illuminating the water with a ring light, her camera in hand. When the tuner registered a note—reading 220 hertz, the frequency that produces an A, for instance—Louviere stopped adjusting. As each note's unique vibration induced its characteristic pattern into the water, Brown captured it with her camera. The pair worked together to obtain a "portrait" of each of the 12 notes.
In each, Louviere and Brown saw a distinct image: G looks like a devil, C# is the tree in the Garden of Eden, and F is something like the underbelly of a frog. If you were to repeat this experiment, you would get the same designs.