The organ was made by an anonymous builder in the 1740s. It was sold secondhand to Nathaniel, Lord Curzon in 1765 by John Snetzler, for whose new organ there was no space in the scaled down design for the house. Robert Adam designed a new case to fit around the old case, a somewhat simplified version of the design originally supplied. The organ was not altered.
In 1824 Alexander Buckingham visited and made a new horizontal bellows using the leaves of the original bellows. he also raised the pitch slightly, but kept the tuning system.
The organ was restored by Dominic Gwynn in 1993 and is at Kedleston Hall, Derbyshire https://www.nationaltrust.org.uk/kedleston-hall
| Open diapason | treble | c#¹ – e³ metal | |
| Stop Diapason | C – e³ | stopped wood | |
| Flute bass | C – c¹ | stopped wood | |
| Flute treble | c#¹ – e³ | stopped wood | |
| Sexqualtra bass 4-3 ranks | C – c¹ | metal | |
| Cornet treble 3 ranks | c#¹ – e³ | metal | |
| Swell Hautboy treble | c¹ – e³ |
Sexqualtra
| 0 | I | II | III | ||
| C | 1 3/5 | 2 | 1 1/3 | 1 | |
| G | 2 | 1 1/3 | 1 4/5 | ||
| bº | 2 | 1 1/3 | 1 3/5 |
Cornet
| 0 | I | II | III | ||
| c#¹ | 2 2/3 | 2 | 1 3/5 | ||
| d#² | 2 2/3 | 2 |
Shifting movement removes Open Diapason and Sexqualtra/ Cornet
Key compass: C D to e³ (bass/treble c¹/c#¹) Swell c¹ to e³ (29 notes)
Pitch: A433Hz (1824), originally A425 (16ºC)
Tuning: 1/4 comma meantone (1824 and originally)
Horizontal bellows 1824, made out of the original leaves.
Wind pressure 3″ (76mm) in 1824 and originally
