| Section | Notes | Specification |
|---|---|---|
| Melody | 23 keys | 2 ranks each bourdon, violin, celeste; 1 rank piccolo |
| Accompaniment | 19 keys | 2 ranks open/stopped flutes |
| Bass | 8 keys | 1 rank each stopped, quint, cello + trombone |
| Counter-Melody | 18 keys | 2 ranks each bifoon, unda maris; 1 rank cello |
| Tremulants | 2 keys | 1 each for melody & counter-melody |
| Percussion | 3 keys | bass drum & cymbal + snare drum |
| Registers | 8 keys | Various - see list |
| unused | 8 keys | Various - see list |
| Mute | 1 key | Silences entire organ (actuates on opening keyframe) |