Piano tuning is the art of adjusting the tension of the strings in the piano to the ideal pitch suited to each distinct instrument. Typically, the A4 note is set at the international pitch standard of A = 440 Hz, around which a piano tuner builds the corresponding pitches. Using specialized tools, the tuner adjusts the tension of each string to achieve the ideal pitches when struck with the hammers.
Over time, factors such as playing, changes in humidity and temperature can alter the tension of the strings, causing the piano to go out of tune. Therefore, it is important to have your piano tuned once or twice a year to ensure the pitch stability of the instrument.Â
In some cases, pianos that have not been regularly tuned, or have gone a long time without tuning, may experience a drastic change in the pitch. In such cases, a pitch raise becomes necessary to bring the piano back to its proper pitch. The pitch-raising process involves multiple tunings of the piano because the low-tensioned strings tend to resist staying at the newly high tension. It requires time for the tuning to stabilize after a pitch-raising session.
Upright piano tuning
Grand piano tuning
Pitch raise