The pipes of the Stopt Diapason and the Sesquialtera are wood and date from the second half of the 17th century,
re-used in ca1740. On the reverse of the stop label for the Open Diapason bass is engraved ‘Voixhumaine', and on the reverse of the Flute ‘Cremony'. The chest must have been made for a reed, divided bass and treble, for the holes associated with them in both upperboard and rackboard are still there, covered with the toeboards and plates for the change of mind.
The organ is perhaps the earliest surviving Georgian chamber organ (another candidate would be the anonymous organ at Kedleston Hall in Derbyshire), and some parts show signs of the evolution towards the standard later 18 th century Georgian chamber organ. The shifting movement was designed with its sliders above the stop action sliders (with a board between). The main puzzle was that the slider movement for the mixture is 9mm, whereas it is 17mm for Open, Principal, and 15th. There were pivot points for two pedals, but one of them seemed to be in an impossible position. There is now a pedal for the Sesquialtra-Cornet, and another for the rest, reducing to Flute and Stop Diapason. The keys slide outwards, though they do not slide back completely into the case and have a lockable cover. The music desk, which must be one of the earliest surviving on an English organ, consists of a shelf which slides out of a slot in the panel above the keys.
The organ has a Harley report on its history and tonal and mechanical layout, listed as no21 under Liss URC.