Luigi Russolo

“To convince ourselves of the amazing variety of noises, it is enough to think of the rumble of thunder, the whistle of the wind, the roar of a waterfall, the gurgling of a brook, the rustling of leaves, the clatter of a trotting horse as it draws into the distance, the lurching jolts of a cart on pavings, and of the generous, solemn, white breathing of a nocturnal city; of all the noises made by wild and domestic animals, and of all those that can be made by the mouth of man without resorting to speaking or singing.
Let us cross a great modern capital with our ears more alert than our eyes, and we will get enjoyment from distinguishing the eddying of water, air and gas in metal pipes, the grumbling of noises that breathe and pulse with indisputable animality, the palpitation of valves, the coming and going of pistons, the howl of mechanical saws, the jolting of a tram on its rails, the cracking of whips, the flapping of curtains and flags. We enjoy creating mental orchestrations of the crashing down of metal shop blinds, slamming doors, the hubbub and shuffling of crowds, the variety of din, from stations, railways, iron foundries, spinning wheels, printing works, electric power stations and underground railways.”
― Luigi Russolo, The Art of Noise