great story- I spent some time watching/discussing piano tuning with the guy that does my yamaha C2. You basically bring it up in 3-5 passes depending on how ou

great story- I spent some time watching/discussing piano tuning with the guy that does my yamaha C2. You basically bring it up in 3-5 passes depending on how out of tune it starts in. He started with a tuning fork and then continued with an app/microphone to dial it in. Another cool trick to dial in the harmonics is to play a (13th? my music theory has escaped me for a moment) but basically play a C and then an octave higher E and keep that spacing throughout the piano and you should hear the notes beating in a pleasant manner. If they dont, you need a tune. Also important to keep in mind that tuning a piano early and often is the best thing for it. Having to make drastic changes to bring it up to pitch is very likely to crack the sound board and or bend/break the harp. If you live in an area with high humidity keep the piano at least 3-5 feet(1-2 meters) from the outside wall of your home.