Organ: harmonious disposal of tubes or conduits where have to run essential fluids in several states and different proportions, which combinations of offer one determinate result. An Organ, can be natural, when its rudimental parts ar of alive cells. One Organ is artificial when it's made up of parts which are installed with hands, in agreement with a technology level and development. The Organs (musical instruments) are the dodecaphonic completest system, hand made for to read musical score playing with both hands over one soft extension of several mobile and successive elements called keys.