Philippe Daverio's Silbermann organs

And why.... "fluted beak"? ... do we want to talk about it? Ha ha

Anyway, cool stuff. I had seen it.

"The air is set into vibration by a flute-like mouthpiece" ..........

Philippe Daverio was perhaps referring to the recorder, due to the shape of the bird-beak mouthpiece.

The recorder (flauto dolce) Blockflöte on German organs, along with the Principale, is one of the oldest organ stops.

Boesendorfer wrote:

The recorder (flauto dolce) Blockflöte on German organs, together with the Principale, is one of the oldest organ stops.

A curiosity has arisen in me, but which is the oldest organ in the world?

The oldest organ in the world is that of the Church of Notre-Dame du Valère in Sion (Switzerland); some elements of this instrument (the case and three of the seven stops) date back to around 1400.
The original keyboard range was 30 notes (from B/1 to F/4). I say original because in 1718 the pedalboard was added and the keyboard range was expanded to 49 notes (from C/1 to C/5).

Therefore, this instrument is not entirely original, as it underwent significant modifications in the 1700s, which altered its original structural integrity.

And so the oldest organ (more or less still original...) is the Lorenzo da Prato located in the Basilica of San Petronio in Bologna.

1471 - 1475 (almost fifteen hundred)

Opposite it is the other Malamini organ.... a bit more youthful. Only from 1596!

However, for both, the cases are no longer original, as the instruments were enclosed within them in 1675.

The sounds are truly very unique.