What is a pitch raise, and does my piano need one?”
Short Answer: It is an extra tuning to give your piano stability, and your piano needs one if it is incredibly out of tune. Long Answer: It is usually called a pitch raise because most pianos that are irregularly tuned are flat, or below pitch. In reality the term should be pitch adjustment, because sometimes pianos are excessively sharp or above pitch. Imagine you have a glass that is half full of water; this will represent your piano when it is at pitch (A440Hz). If a piano has not been tuned for more than a year it can become very sharp or very flat. So now imagine that your glass of water is almost empty or a quarter full. This would be a flat piano. If a piano tuner were to tune your piano back to standard pitch, you might think that would be like filling the glass back to exactly half way, but because the piano is made of metal and wood under enormous amounts of tension, it doesn’t exactly work that way. If the tuner tuned the piano back to pitch, it would actually drop the tunin
