When a piano string breaks, there are several repair options available. A broken string can be repaired by tying a tuner's knot to splice the old wire to a short piece of new wire. The advantage of such a repair is that an older wire that is spliced will often match the tone of the surrounding strings better than if it had been replaced. In addition, a string that has been repaired this way will stabilize much more quickly than a new wire. Tying a broken string eliminates the need to return several times to retune the string back to the correct pitch. The drawback is that a wire with a knot in it doesn't match the other wires in appearance.