I was lucky to be out here on the terrace of the Hayward Gallery. I prefer to work within the spaces of architecture and sound. Your perception changes when you walk around here and hear something unusual. One can see the skyline of London and acoustically one finds oneself in a jungle. It is an experience every user of a Walkman knows very well.
Sound art is a relatively new phenomenon.
It is a convergence of art and sound. It lead to the extension of what Adorno called 'musical material'. For Cage, any sound could be used musically. In addition, the huge progress in computer technology made the exploration of the inner world of sounds possible. The Japanese Ryoji Ikeda, for example, used the strange, unreal qualities of sine tones for his white tunnel.