At some point in history, somebody, somewhere must have started to experiment with a mechanical version of the Pan Pipes, one that had a greater compass and greater power.

    We don't know who first started along this road, but we do know who was generally recognized as the inventor of such an instrument, the first pipe organ.

    His name was Ktesibius and he lived in Alexandria (in what is now Egypt) in the third century BC. The son of a local barber, he was an engineer specializing in hydraulic and pneumatic devices.

    What Ktesibius did was to combine the Pan Pipes with a means of providing a supply of compressed air and a means of controlling the arrival of this air to each pipe. In doing so, he devised the instrument that is the direct ancestor of the modern pipe organ.

found here: http://www.google.de/search?q=cache:ZlXaps6iG94C:www.aq.upm.es/organ/encyc/his01-e.htm+history+organ+barber&hl=de&ie=UTF-8

Wolfgang