Our world is full of sounds which somehow or other have an effect upon us: Our forefathers fought against their enemies to the drums of war; the song of the nightingale besets upon us a lyrical mood; the murmur of water both soothes and relaxes. Let he who has ears, hear. The noise of the big city with its ever changing rhythm and pulse; the honking of horns and the whispers of passersby. The voices of the forest residents woven into the rustle of descending leaves and the whisper of the wind in the tree-tops of tall pines. The clickety-clack of trains soothe and help us fall asleep, while the quiet hum of the dishwasher tunes us into a meditative mood and connects our brains to the noosphere.