Born in Southern California, I spent most of my childhood years on Air Force bases. Sonic booms dominated the sound landscape of my childhood. As a resident of Riverside, California, I sense the vibrations of sonic booms and earthquakes regularly. When I was researching the San Andreas fault, I was fascinated by the visual imagery of a simulated earthquake. I have created those visual patterns with suminagashi, a Japanese paper marbling technique. Literally, the word means “ink floating.” The suminagashi layers are placed under layers of wax, like the seismic activity we sense underground. I made the marks on top of the wax using a stencil I created with vintage player piano rolls – music from the past, from another time of great social inequity: 1929.