Barber Ktesilbios, . . .
“.. succeeded in making a machine consisting of a hollow vase inverted, with an opening on the top, to which was attached a trumpet, and, on water being pumped into the vase the air was driven forcibly through the trumpet, producing a very powerful sound; and the machine caused so much admiration that it was consecrated in the temple of Venus.”
Charles Francis Abdy Williams The Story of the Organ, 1903
“…The writings speak of water-blown pipes, which were used to simulate the singing of birds and the sound of a trumpet blown by a statue of Memnon in Thebes. This statue has been called one of the world’s wonders. When the sun shone upon the statue from a certain angle (particular time of day), an awe-inspiring sound was emitted, according to Tacitus, Pausanius and other writers. They compared the sound, produced by two organ pipes, to the sound of the bursting strings of a lyre or harp. The sun’s rays fell onto a sealed tank, which was partially filled with water. When the water was heated and had expanded sufficiently, it was forced through a siphon into a second tank. The air, which was displaced from the second tank, blew the two pipes. During the cooler night, a vacuum was created in the first tank causing water to be drawn in from a reservoir thus making the instrument ready for the next day. The tank was shielded from the sun so that the sun’s energy would warm it only at a very specific time of day. In another Greek example, a pipe or whistle was blown to imitate the chirping of a bird. An artificial bird was placed on top of an artificial tree on top of a mechanism similar to the one described above. The warbling of the bird was imitated by the inversion of the sounding pipe into a tank filled with water. This instrument was not solar-powered, and had to be activated by turning on a tap. It could only play until all of the water had flowed from the first tank into the second one. Aristokles (second-century BC) speaks of an instrument he calls the organon referring to a water organ, which made figures play wind, string and percussion instruments.”