Casparini's activities were a rebuilding in the years 1686-1687 of the organ originally built by Caspar Zimmermann in 1532-1536 and changed by Carlo Prati in 1657-1659. The stop-list and remarks here are quoted from VAN DIJK 1988: 39. MATHIAS & WORSCHING (1960: 18) gives a version of the stop list which is differing in details.
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The "Flautin selvatiche" is in Germany known as "Waldflöte".
The Arpa finta maybe was a set of bells.
The reeds in the pedal can be considered a typical German addition to Italian organ building.
The stop-list follows:
Organo Grande | Organo Eco | Pedale | ||||||
Principale grande | 8 | Flauto stoppa | 8 | Contro Bassi | 16 | |||
Principale secondo | 8 | Flauto aperto | 4 | Ottava e contrabasso | 8 + 16 | |||
Ottava | 4 | Cymbalo o Sesquialtera | Ripieno | |||||
Duodecima | 2 2/3 | Mistura | Posaun | 16 | ||||
Decima quinta | 2 | Trombetta | 8 | |||||
Decima nona | 1 1/3 | |||||||
Vigesima seconda | 1 | |||||||
Vigesima sesta | 2/3 | |||||||
Vigesima nona | 1/2 | |||||||
Trigesima terza | 1/3 | |||||||
Trigesima sesta | 1/4 | |||||||
ripieno? | ? | |||||||
ripieno? | ? | |||||||
Flauto stoppa | 8 | |||||||
Flauto aperto | 4 | |||||||
Flautin selvatiche | 2 | |||||||
Corneto picolo | ||||||||
Corneto grande | ||||||||
Trombetta | 8 | Arpa finta | ||||||
Voce Umana | 8 | Tamburo | ||||||
Fifaro | 8 | Rosignoli | ||||||
Regallo | 4 | Cucu |
It is not common to notice in an Italian organ a Vox Humana belonging to the reeds. That the Fifaro should have been a reed is in all probability a mistake from the notator of the stop list.