What separates a merely “good” piano tuning from a first class piano tuning service? From my ten years in the Sheffield piano tuning trade it comes down to several key factors that all require a lot of attention and diligence. The three factors are:
- Equal temperament – the tuning of intervals in accordance with the equal tempered scale. Using the high-end piano tuning software Tunelab plus my own aural checks of the beat frequency of intervals (fifths, fourths, octaves, major and minor thirds against their related sixths) I can achieve a first class equal tempered scale across the whole piano.
- Unisons – Eradicating the pulsing/beating from each note by fine tuning each string. This is one of my strongest areas as a piano tuner and its a good skill to be proficient in. A piano tuner who is strongly skilled at tuning unisons will achieve the purest tone from the piano, giving it the concert hall sound rather than a simply satisfactory sound.
- Stability – great piano tuning hammer technique and patience are the biggest factors in piano tuning stability. Achieving great stability is the reason a piano tuning can be so time consuming, taking up to ninety minutes or more to complete. The piano tuner must be certain that he or she leaves your home with the piano sounding great for another six months and that each note is securely in tune so that no call backs occur. Every piano tuner has their own way of setting the wrest pins that they achieve maximum stability – the position of hammer, tuning sharp then flat, moving the pin deep inside the wrest plank; all those are factors to consider. I have found best stability occurs when one hits the keys hard while moving the pin in tiny increments.
There are many other factors to consider, but a piano tuner who has taken care to become skilled in those three areas will have gone above and beyond the average. Being skilled is one thing, but being diligent on each every job (the right attitude to have) is equally important. The goal must be to ensure that every piano is brought to its very best.