Sand has become an increasingly crucial part of everyday life. High-purity silicon dioxide particles are the essential raw materials from which we construct concrete, glass, fiberoptic cables, computer chips, and other high-tech hardware. Minerals are the physical components on which the virtual world but also "our nature" is vibrating. *Smart.ing Bodies* is a multisensory sound installation. A kind of sensory vitreous organ, consisting of two glass resonators, sensors, motors, and an algorithmic composition created partly by AI learning processes. The glass instruments are made of quartz sand, which Rajca collected from disappearing beaches and mountains around the world. These minerals got purified and burned into specific glass shapes. The chemical components, the material thickness, and the shape of the glass resonator determines the spectrum of frequencies that can be triggered while being played. A tuning process similar to the art and physics of tuning bells. These new glass bodies are each rotating based on an algorithmic program around their own axis, while a drum stick with a piezo electric sensor inside is striking the glass and sensing the vibrations. Here, a small electrical charge is produced which is monitored, processed within the algorithmic program, and subsequently modulates each other´s in/activity. While being played, the glass bodies resonate—pure (perfect) tones are transforming into noise and standing waves and are challenging each actor’s natural material frequencies. In order to keep on playing and to avoid a “resonance disaster” (the destruction of the glass or motor) the algorithmic program that is driving the hard- and software has to learn to conduct a variety of smart frequencies. These resonating and sensing instruments are turning into self-regulating devices, trying to avoid a resonance catastrophe by countering destructive forces i.e. violent oscillations–accelerations.

Evelina Rajca (PL) studied from 2006–2011 at the Academy of Media Arts in Cologne and at the Central Academy of Fine Arts in Beijing. Rajca investigates through her interdisciplinary work the influence of historical and contemporary cultural technologies on society, and how normative social behaviors in turn are embedded in technical systems. How human and non-human systems reorganize, for example, with the intention of controlling (unexpected) upheavals, is a recurring question. Evelina Rajca´s recent works *Managerial Revolution* and *smart.ing bodies* explore both the processes of resistance, and their boundaries.