Ideally, a piano should be tuned every six to twelve months based on the use, humidity, and quality of the instrument. If a piano is not used regularly, or the budget is limited, the instrument should still be tuned once a year, and never go over two years without a tuning.  

 

Pianos, being made mostly of wood, respond to changes in temperature and humidity, causing the soundboard to expand and contract. Regular tuning not only makes for a more pleasurable playing experience and tuning stability, it also prevents costly repairs in the future.