Not unheard of. Beethoven's Op. 109 (top note c#4), for example, would have worked on his CC-c4 Broadwood, because the c4 isn't used in the entire piece and can be retuned to the c#4 that appears at the end. This also reduces the stretch in the right hand between the ongoing trill and the top melody.

Tilman


On Sat, 29 Oct 2016 14:52:52 -0400, Dongsok Shin <[log in to unmask]> wrote:

>Bach Triple Concerto an interesting case. If you have a harpsichord going to e''', I discovered I could tune the d#''' to f''' and play that second movement. Of course, that is provided one can tune the d# up without breaking the string.
>Dongsok
>
>Sent from my iPhone
>
>> On Oct 29, 2016, at 1:30 PM, Keith Womer <[log in to unmask]> wrote:
>> 
>> On Sat, Oct 29, 2016 at 9:13 AM, J. Claudio Di Veroli <[log in to unmask]>
>> wrote:
>> 
>>> TREBLE f'''
>>> - I cannot find any non-Iberian harpsichord score including this note, in
>>> spite of J.-J. Rousseau showing a fully
>>> ​​
>>> chromatic FF-f''' range (1765).
>>> 
>> 
>> ​The second movement of Bach's Triple Concerto in​
>> 
>> ​A minor ​BWV 1044 goes to both e''' and f'''.
>> 
>> ​Keith Womer
>> 
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