1. IN AN AIR OPERATED MUSICAL INSTRUMENT HAVING A SERIES OF TUNED REEDS, AN AIR FLOW SYSTEM, SAID SYSTEM COMPRISING A FIRST BELLOWS, A BODILY MOVABLE KEYBOARD MOUNTED OVER SAID FIRST BELLOWS WHEREBY A PLAYER MAY MANUALLY COMPRESS OR EXPAND SAID FIRST BELLOWS WHILE HE IS PLAYING A TUNE ON SAID KEYBOARD, A SECOND BELLOWS SPACED FROM SAID FIRST BELOWS AND CONNECTED THERETO WHEREBY SAID MANUAL OPERATION OF SAID FIRST BELLOWS WILL EFECT CONTRARY OP-