Visitors to the gallery will be able to watch and control a rhythmic symphony of light played out on a giant circuit board of zinc-plated steel, passivated to provide insulation from electrical interference. Echoing the graphic of an equaliser, 160 fluorescent bulbs, fed by a skein of wires and cables, light up in alternating currents. The circuit is completed by the audience themselves, who have the capacity to “conduct” this electrical spectacle from the centrepiece switchboard.