Why do pianos go out of tune?
The primary cause for pianos going out of tune is the changes in humidity from season to season. In New England the humidity can vary from very low during winter to very high during the summer. The piano is a wood instrument with strings that lay over a wooden sound board and bridges that expand and contract due to changes in humidity, causing the strings to stretch or relax.
How often should my piano be tuned?
It is recommended that new pianos be tuned three to four times the first year and then twice a year from then on. The bare minimum is once a year. The longer the duration between tunings the further the piano will go out of tune. More time and expense will be require to achieve an accurate tuning.
What is a pitch adjustment?
A pitch adjustment is needed when pitch of the piano has moved too far away from standard pitch A440 to be able to tune it accurately.