Piano tuning

Piano tuning is the process of adjusting the tension of the piano strings to ensure that the instrument produces the correct pitch for each note. Pianos are complex instruments, and factors such as temperature, humidity, and regular playing can cause the strings to stretch or contract, leading to changes in pitch. During tuning, a skilled technician, known as a piano tuner, uses a tuning fork or an electronic tuning device to establish a reference pitch, typically the note A above middle C (A440 Hz).