Sound art is a term that's almost always cause for concern, but this elegant installation by artist Ruben Dhers is gloriously captivating. In "Playa," 14 guitars lying under a tangled canopy of wires are listlessly strummed by an orchestra of 31 fabric-clad DC motors conducted (in the musical sense) by an Arduino processor. The dramatic lighting makes the landscape of wood and wire something beautiful to behold—but the sound of the mechanical ensemble, as you'll hear, is what's really breathtaking. [The Creators Project and CoDesign]