Musical Voids A text by Antoni Malinowski Even when choosing transparent and seemingly colourless glass elements for the Cambridge elevation I had to make decisions about colour. This public art project for the cb1 development sprang from the concept of animating the elevation’s architectural grid, whilst at the same time aesthetically elevating them through the light reflected and refracted from the small glass elements I introduced, scattered throughout its surface. The almost random pattern of reflections creates a large façade-sized drawing. Transparent, as if drawn on water, the art work is made of solid glass rectangles attached to the mortar by the small metal bolts. The subtle chromatic variegation enhances the light’s journey across the elevation, dissolving it into a coruscating display of refracted light on certain days. Diverse types of glass that refract light with subtle variations were selected for the project. Iron-reach glass has a green tint, and the low iron glass a particular whiteness. This whiteness of transparent glass is different when we look at the commercially available Pilkington float glass, and very different from high sodium Murano glass. These subtle tones produce different associations, reveries and feelings. When choosing colours which interact with a given architectural space, one must take into account both their perceptual appearance, and the meanings they may imply. All of a painter’s knowledge about colour, and of the interaction between colours, should be part of this process.