In this lecture and demonstration, New York-based sound and visual artist Thessia Machado (Inga Maren Otto Fellow in Music Composition) offers an exploration of the emergence of sound in her artistic practice. She will also discuss her research into the musical possibilities of humble sonic sources and discarded technologies—turntables, photocells, circuit boards, speakers, and LCD screens. Following her talk, Machado gives a short performance involving an instrument she recently built: an analog synthesizer-circuit controlled by the image supplied from a cathode-ray-tube (CRT) baby monitor (pictured).