Our Philosophy
Our passion is unlocking
musical talent in others.
A family-owned team carrying a 45-year legacy of caring for fine pianos across the Front Range.
Enriching Lives Through Music
A complete array of care for your valued piano.
Serving the Denver metro area and beyond, Denver Piano Service ensures the proper maintenance of your instrument. You can always depend on our experts to deliver the highest level of service — at a fair price, in a timely manner.
Our Core Values
From a family-owned company.
Our Promise
We always conduct ourselves honorably — in and out of our clients' homes.
Our Commitment
We provide the highest level of service possible, every time and for every piano.
Our Goals
We actively advance our skills in piano technology to bring the most innovative service to our clients.
Our Why
We unlock musical
talent in others.
The Legacy
Founded by Greg Shaffer.
After 45 years of piano tuning, repair, and service, Greg passed his knowledge on to the next generation. He envisioned and created “The Colorado Institute of Piano Technology,” where he spent ten months with Luke and Sean — teaching piano history, repairs, rebuilding, and the art of aural tuning.
Now that the business has transitioned, Greg and his clients can be assured of the same friendly, professional service they've come to expect over the past five decades.
Meet the Team
The hands on your piano.
Sean Weinert
Owner, Piano Technician
Raised in a musical family, Sean began piano at age 5 and found his love of live performance playing guitar — a 20-year member of the Denver music community in performance, audio engineering, and production. He completed an apprenticeship under Greg Shaffer in aural tuning, repair, and restoration, where piano technology became the intersection of his two passions: working with his hands and a life in music. When he's not servicing pianos in the field, he's covered in sawdust and glue in the restoration shop.
Luke Mizuki
Registered Piano Technician
Luke is a Registered Piano Technician certified by the Piano Technicians Guild — one of only 11 in the Denver metro and 34 in all of Colorado — and is currently training as a Certified Tuning Examiner, the highest tuning achievement in the PTG. He holds a B.A. in Music and an M.A. in Teaching, has performed and recorded across bands, orchestras, and choirs since childhood, and directs choirs at Grandview High School and with Young Voices of Colorado.
Matt Hoffman
Certified Piano Technician
A passionate musician, producer, and technician, Matt earned a B.M. in Music Composition (CU Boulder) and an M.M. in Music Theory (Indiana University Jacobs School of Music), then spent 17 years teaching songwriting and theory in higher education. He has completed the Certified Piano Technicians course and is finishing his final test toward Registered Piano Technician status.
Work With Us
Get a quote for your next piano need, project, or upkeep.
Book online in under two minutes, or send us a note and we'll take it from there.