If your piano is not holding long lasting tunings and the Pin Block is dryed out, place two cans of water in the lower back side of the piano or even behind it. If possible, drape a piece of cloth or burlap over the entire back side to hold the humidity in. This will allow for the water/humidity to stay inside the piano, and prevent it from being absorbed into the outside air. Please note: this method should only be used for pianos with loose pins that are not holding their tuning.
