On Friday, May 6, 2005, at 01:44 PM, Susan Kline wrote: > I've noticed that sometimes a tuning seems to get through a heavy loud > concert okay, > but then over the next week or so wanders out, without even being > played. Has anyone else observed this? > Oh, in our recital hall, it only takes a matter of hours. > I have no idea how this can happen, but > I've met it a few times. > Susan Humidity changes, differences in climate in the stage and storage areas. It's amazing to me that a piano is ever considered stable for a performance. (I really think it never is, we just get them to a point where instability isn't so noticeable.) The relative humidity in our recital hall can be 15-20% different from morning to evening because the lights are off all night, so it cools down. Then classes meet in there half the day, followed by tuning time, rehearsals, etc. You wouldn't believe the difference in the piano from 8 am to 2:30 pm. Jeff Jeff Tanner, RPT School Of Music University of South Carolina
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