Spiros
Created page with "{{wkpen |wketx=thumb|Musicians playing a Roman tuba, a water organ (hydraulis), and a pair of cornua, detail from the Zliten mosaic, 2nd century AD The water organ or hydraulic organ (Greek: ὕδραυλις) (early types are sometimes called hydraulos, hydraulus or hydraula) is a type of pipe organ blown by air, where the power source pushing the air is derived by water from a natural source (e.g. by a waterfall) or by a manual..."
