> From: Patrick C Poulson <pcpoulso@pacbell.net> > > Charles: I have experienced the problem of a piano going out of tune after > the case has been opened, particularly on uprights, but I have always > attributed the drift to a change in temperature rather than humidity. Thanks. I'll pay more attention to the temperature changes to get a better picture of what I'm dealing with. Come to think of it, I usually turn up the heat just before I go into the room with the piano. I have a similar problem with my tuning fork. Between handling it and setting down and handling it again, its pitch changes quite a bit. TuneLab doesn't seem to have that problem. :) Charles
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