'We get infinitely more pleasure imagining combinations of the sounds of trolleys, autos and other vehicles, and loud crowds, than listening once more, for instance, to the heroic or pastoral symphonies. (…) Every manifestation of our life is accompanied by noise. (…) Sound, alien to our life, always musical and a thing unto itself, an occasional but unnecessary element has become to our ears what an overfamiliar face is to our eyes.'

Luigi Russolo, 1967

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