My piano was tuned in May but by August was sounding awful. Should I have called the tuner back to re-tune?
Maybe it’s connected to global warming but this year (2006) we have experienced some rather untypical extremes of humidity and temperature in the UK which have made most pianos very unstable. Instruments which normally hold their pitch have gone considerably sharp. By all means call the tuner back if it becomes unbearable but, unless you are sure it was due to circumstances other than the weather, it would be unfair to expect him to re-tune without charging. As a point of interest, an ETD makes the job of pitch adjustment easier and far more accurate.