| Section | Notes | Specification |
|---|---|---|
| Melody | 22 keys | 1 rank each cello, violin, harmonic piccolo + trumpet |
| Accompaniment | 12 keys | 2 ranks open/stopped flutes |
| Bass | 8 keys | 3 ranks open/stopped flutes, + trombone |
| Percussion | 3 keys | bass drum & cymbal + snare drum |
| Registers | 2 keys | Forte + piano |
| Mute | 1 key | Silences entire organ (actuates on opening keyframe) |