Professionally tuning pianos since 1979. Working with all types of acoustic pianos. Tuning pianos by ear, scored 98% on the P.T.G. exam. I sometimes utilize an electronic tuning device to speed my work up. Most can tune with accuracy, but it takes many years of learning to add stability to the tuning. Accuracy and tuning technique to set the tuning pin/string correctly is needed so that when a piano is played hard it will not go out of tune.