What is a fine tuning or a pitch raise?
To fine tune a piano only small adjustments can be made, so it makes sense that the more often a piano is tuned, the more stable the tuning will be. If the pitch must be raised a great deal to bring the piano up in pitch, then it should be followed by a fine tuning. This is a pitch raise and tuning. In some cases it may not be possible to raise the pitch right up to A-440.
