DISCLAIMER : Tune your piano at your own risk! Here are a few basic rules to remember: – If you tune a string and the sound does not change, STOP immediatly you are probably tuning the wrong string. Check again. You could break a string easily. – Don’t do this on an expensive piano – If you have been trying for more than a few minutes to get a string in tune, have a coffe (of whatever you like) – Sometimes (especially on older piano) even a single string can sound like if it was out of tune. Just try and make the best of it but that’s just because of imperfections of the piano. That string will always sound like that. – Be indulgent with your tuning results. If you really don’t like how you tuned your piano, call a professional tuner.