Very interesting question--

[Robin Stevens]

 I had the Lord Mayer of a small town call me and say proudly that his 
never been tuned" Chinese Pearl River he bought in the 1950's needed tuning.
According to his ear only a couple of notes needed tuning!!!
It had dropped a full semitone but no unisons had gone completely berserk. I
tuned it to A415, but I am not holding my breath waiting for the next tuning
[--((

Robin Stevens
 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: https://www.moypiano.com/ptg/pianotech.php/attachments/20070131/da022f52/attachment.html