Keynote Pianoworks

Piano tuning, repair, and restoration services in Charleston, SC

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our expertise

Tuning

We use a hybrid aural and electronic piano tuning method and stay up to date with the latest advancements in piano tuning techniques.

Repair

Our fully-equipped woodworking shop enables us to handle a wide range of piano repairs.

Restoration

Our piano restoration projects are customized to your needs and performed locally in the Charleston area.

Why choose us?

Our methods are thoroughly researched, and we are dedicated to maximizing the potential of your piano to enhance your musical experience.

Hand-crafted excellence

Blending traditional hand-tool techniques with a modern perspective, where timeless artistry meets contemporary sensibilities.

Embracing tradition

Each instrument’s history and design are considered to elevate its performance and sound. Historical tunings are available upon request.

Complimentary consultation

Consultation and evaluation for any repairs, reconditioning, or restoration are complimentary for every project.

Piano Technician’s Guild member

Proud to be a member of the Savannah–Charleston and Palmetto chapters of the Piano Technician’s Guild.

Fall back in love with your piano

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services offered

Piano Tuning

Ensure your piano sounds its best with one of our professional tuning service appointments. We adjust the tension of each piano string to achieve the correct pitch. Regular tuning is recommended every 6–12 months for optimal tuning stability.

Piano Regulation

Enhance your playing experience with our expert regulation service. We adjust each key mechanism to ensure even touch response across the keyboard. Major regulation is recommended every 5–10 years to maintain peak performance.

Piano Voicing

Transform your piano’s tone with our voicing service. We carefully manipulate the piano hammer felt to mellow or brighten the sound, allowing for greater tone control. Voicing is recommended every 3–5 years to keep your piano sounding its best.

Key Recovery

Revitalize your piano’s keyboard with our key recovery service. We can replace chipped and worn keytops with fresh, high-quality materials to enhance both appearance and texture. In some cases, we can preserve old ivory keytops that are still in good condition.

Finish Repair

Restore the beauty of your piano. We expertly hide or remove scratches, water damage, and other blemishes from both traditional and polyester finishes. Our skilled technicians ensure a high quality repair that enhances your piano’s appearance.

Reconditioning

Restore your instrument to like new with our meticulous reconditioning service. We thouroughly clean the action and replace all dry and worn felts to restore your piano’s responsiveness, ensuring it plays beautifully and delivers exceptional sound quality.

portfolio

Milton Upright, 1916 (Ongoing)

Milton Upright, 1916 (Ongoing)

1916 Milton - Removing the Tuning Pins

1916 Milton - Removing the Tuning Pins

Story & Clark Upright, 1895-1900 (Ongoing)

Story & Clark Upright, 1895-1900 (Ongoing)

Polyester Finish Repair, before & after

Polyester Finish Repair, before & after

Finish Repair, before & after

Finish Repair, before & after

Wood Repair, before & after

Wood Repair, before & after

Refelting, before & after

Refelting, before & after

meet the owner

Mathias Walters

Mathias Walters

Owner, Lead Technician

Mathias is a pianist and woodoworker with a passion for antiques. In addition to his work with pianos, he maintains a collection of antique hand tools, many of which are actively used in the day-to-day operations of his shop.

service appointments

Basic Service

$180

  • 1½–2 hours
  • fine tuning
  • light cleaning
  • call for multi-piano discount
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Full Service

$240

  • 2½ hours
  • fine tuning
  • comprehensive maintenance
  • condition report
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Revive & Renew

$460

  • 4–5 hours
  • fine tuning
  • missed maintenance catch-up
  • touch & tone optimization
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Consultation

FREE

  • restoration planning
  • water damage evaluation
  • finish damage evaluation
  • $60 pre-purchase inspection
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Daulton Hagan

Feb 2024

Very knowledgeable and professional!! Great tuner and knows what he is doing! Definitely would recommend!!

Charles Crane

Jan 2024

Mathias is extremely skilled at his trade. He was very detailed oriented and focused. I greatly appreciate him letting me pick his brain about the inner workings of our piano and his methods of tuning. Highly recommend to anyone in the Charleston area!

Donna Whinnery

Nov 2023

Mathias was great in communicating to setup tuning & provided excellent service on my baby grand.

Gil Trevino

Oct 2023

Great job, explained the issues found and was very upfront and honest about what needs to happen moving forward. Would highly recommend.

James McKinney

Jun 2023

On time, professional, very accurate and thorough.

Sarah Delia

May 2023

Mathias was professional and competent and took great care of our Boston grand piano! I will definitely contact him for the next tuning!

Emily Evans

Dec 2022

Mathias is incredibly professional and helpful. He takes the time to explain his process and recommendations for future care. He has helped to restore my grandmother’s piano to be playable again and for that I am very grateful!

Jay Winnerman

Mar 2022

Mathias is excellent—my piano has never sounded so good! Took his time to make sure that it was perfect sounding! Very nice and professional as well. I would highly recommend M. Walters Piano Services to any and everyone!!

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contact us

contact details

North Charleston, SC
Phone: (843) 619-7593