Recommended By: The Fret House | Singer Music | The Music Store

Grand Piano Icon

Extraordinary service for exclusive buyers.

Local Tuning and Repair Expert in West Covina, CA

Your piano is a finely crafted instrument built to the highest tolerances. It takes a highly skilled touch from an experienced professional to bring forth the richness and quality of the sounds that lie within.

Make music the way it was meant to be with a perfectly tuned piano from a local tuning and repair expert in West Covina, CA. John Caterino Piano Service offers tuning, regulation, voicing, and repair to ensure that every song sounds sweet. Contact John in West Covina, Glendora, and Diamond Bar California, to tell him about your needs.

Contact Us


A well-tuned piano sounds true; it sounds right. But over time, as the instrument ages and is affected by changes in its materials and the effects of fluctuating temperatures and humidity, yours will go out of tune. This can lead to a minor change that’s subtle and hard to detect or a major one that even lands harshly on an untrained ear. Either way, a skilled tuner will be your best friend. 

Piano tuning involves adjusting the tension of each string, ensuring that each of them sounds in harmony with the others. Each of the more than 200 strings is attached at one end to a hitch pin and has the other wrapped around a tuning pin. The tuner and repair expert turns the tuning pin with a lever until the desired pitch is reached.

Tuning and Repair Expert - West Covina, CA

Piano Repair - West Covina, CA


The action or moving parts of your piano may need periodic adjustment to compensate for wear, compaction, and changes in the wood due to humidity. Regulation ensures that each moving part is operating as it should and that your piano remains responsive to your touch. 

This process keeps your piano a joy to play and delivers the feel of one that’s fresh from the factory.


Your piano has an individual sound; it’s a unique creation, regardless of how mass-produced it may be. Each one has a different tonal profile than another, and piano voicing keeps yours true and melodic. 

Voicing adjusts the tone of your piano. A variety of techniques including proper realignment, reshaping, treating the hammers with chemicals, and sticking needles into them are used to soften them and adjust the tone of your instrument.

Piano Technician - West Covina, CA

Piano Key Repair - West Covina, CA


A piano is just like anything else that faces a lot of use; it’s susceptible to wear and damage. Sooner or later, you are going to need to have something fixed or require a piano part replacement. John is ready to help. 

Piano repair is available for problems ranging from worn action parts to squeaking pedals and sticking keys. John can replace any part of your piano, putting it back into like-new condition for easier use and a better sound.

Call John at (626) 919-1556 or email him to take advantage of his piano repair services right away.