Organ

Organ [Lat. *organum] (Fr.: orgue; Ger.: Orgel; It.: organo; Sp.: órgano), the most complex of our musical instrs., a wind instr. consisting of pipework, wind supply system and action—usually in an enclosing case—and keyboards. Actually the large majority of today's organs are several separate organs, each with its own pipes, action, and keyboard, housed partly or completely in a common case. The earliest true organ was the water organ, or *hydraulos, invention of which is attributed to…