Piano Tuning
All pianos require tuning from time to time and for a variety of reasons. Humidity, temperature, usage and general settling all play a part in determining how stable a piano tuning remains.
How often a piano is tuned is dependent on the usage of the individual piano. In domestic situations, it is good practice to have a piano tuned at least twice a year. Even if it does not get much use, a piano may go out of tune with fluctuations of temperature and humidity.
In the UK in winter when humidity is low, a piano can drop in pitch, and likewise in summer when humidity raises the opposite again can happen. In reality the more regularly a piano is tuned the more stable it will remain, so many concert grand pianos are tuned on a daily basis and may even be checked two or three times on the day of performance.
