We replace the cloth behind the keys. This helps prevent and improve key wobbling and noise. In addition, we polish the pins that directly contact the cloth. By removing rust, dust, and other debris from the pins, the movement of the keys after the cloth replacement becomes smoother.

We replace the front part of the keys. Due to aging, discoloration, and deformation, this replacement helps prevent and improve not only visual changes but also any issues with key movement.

When the white key surfaces show cracks, discoloration, or damage that can’t be improved just by polishing, we replace the material. Especially with young children whose skin is soft, damaged keys could lead to injury, so we recommend early replacement when issues are spotted. (Note: We do not replace with ivory keys.)

We handle issues such as cracks or material changes. Please contact us for more details, including pricing.

This part is only found in upright pianos. It consists of thin cord-like parts that, due to aging, can break or discolor. If left unreplaced, it can cause double sounds with a single key strike or interfere with the spring on the chord, causing noise and other issues. We recommend early replacement when such deterioration is found.

The muffler is a felt part that is inserted between the hammer and the strings when the soft pedal is used. It softens the sound by allowing the hammer to strike the strings through the muffler. Due to long-term use and wear, mufflers can develop holes or become frayed. As deterioration progresses, their functionality is impaired, so we replace the felt at the appropriate time.

As described in the "Tone Regulation" section of our tuning and regulation services, there are limits. If the hammers are severely deteriorated or have reached the end of their life (such as with punctures), we will replace the hammerheads entirely.

If a string breaks, we will replace it. (The photo shows the replacement of all strings during a grand piano overhaul.)