I came across these videos, where it is written that the instrument is tuned with an "Unequal temperament", temperamento ineguale (did I translate that correctly?) or perhaps "non equabile", or are they two separate things? My apologies if I am wrong, as I am not an expert in the field..
The tuning principle is the same one used when tuning a piano by slightly detuning the first string on the left (to obtain a slight vibrato on the sound) or is it a completely different tuning?
To me, it seems quite different as a concept, but I take into account the fact that the piano in the video in question is also an antique one; now, being an enthusiast of ancient sound, this topic interests me very much, i would be thinking of having my instrument tuned in one of these ways and I should understand exactly what to ask.... I would like to have a distinct vibrato on the sound
Maybe I have said a lot of nonsense, I apologize in advance but I am truly curious
If I may add something (which people who have had the chance to personally see and hear pianos specifically tuned with certain scales can expand upon more exhaustively),
some time ago I found this piano concert, in which a special tuning was performed on the piano on the left, using a non-tempered scale; it might be interesting, besides being excellent work (for me):
It seems (it could be) that the tuning was programmed only within a certain range of extension, while part of the piano was left with a "standard" tuning for us.
I am not an expert in piano tuning and organology, but it is not uncommon to find compositions (especially in the 1900s) that prescribe a "scordatura" or a different tuning for the piano.
When it is not explicitly requested by the composer, well, that's where we enter the vast world of historical performance... as I imagine you know, equal temperament was not the first nor the only tuning system used in the past, and although the piano is a relatively "modern" instrument, it is possible to trace back to different tuning traditions. Compared to "unequal" temperaments (also called "well temperaments," from which the common misunderstanding of the meaning of Bach's "Well-Tempered Clavier" arises, which refers to THESE temperaments and not to equal temperament), there are many. The most "famous" are Pythagorean, meantone, and Werckmeister temperaments
