The forks are tuned to a Diapason normal, also called low pitch or French pitch.
The shattering symphonies or dying murmurs of the organ suggested the rushing of the wind through the forest, then the full diapason of the storm.
The organ swelled in a muted diapason, soon dropping to an almost inaudible tone.
This organ incorporates parts of the original organ and also a pedal open diapason given as a gift to the church.
