Sound, estranged from life, always musical, something in itself, an occasional not a necessary element, has become for our ear what for the eye is a too familiar sight. Noise instead, arriving confused and irregular from the irregular confusion of life, is never revealed to us entirely and always holds innumerable surprises. We are certain, then, that by selecting, coordinating and controlling all the noises, we will enrich mankind with a new and unsuspected pleasure of the senses. Luigi Russolo, The Art of Noises, 1913