How to Tune Pianos

The Hobby, Skill, and Career of Piano Tuning

By Mark Cerisano

How to Get Superior Unisons and Stability

If you watched my YouTube video, you know that getting clean and stable unisons is the most difficult piano tuning skill to master. I gave you a quick and dirty way to fix them between tuners - find the offending string and mute it off until the piano tuner can come and do a professional tuning.

Here's the link to the mutes that I suggest you use to do that:

Simple piano tuning mute. Felt. 3 1/8" x 5/8"
Howard Piano Industries.
Use it to selectively mute off offending strings.

($7.95 as of April 2026. They were out of the $1.50 ones but they sell to the public.)

Simple piano tuning mute. Rubber. 4" x 1/2"
Schaff Piano Supply.
Use it to selectively mute off offending strings.

($0.95 as of April 2026. But you have to ask to be put on their list of people who are studying piano tuning.)

But if you still would like to learn how to tune unisons, these resources will help, and as a YouTube subscriber, you can get a massive discount!
These courses will help you get Superior Unisons that STAY!

Click the links below and then watch the FREE lessons in each course.

Then come back to THIS page and use the button below to buy both courses for less than one of these courses, plus a BONUS course for FREE!

FREE LESSONS!

Here's the link for the FREE unison lessons:
How to Get Superior Unisons

Here's the link for the FREE stability lessons:
How to Get Superior Stability

If you would like to purchase both courses for less than just one, use the PAYPAL button below.

Use the PAYPAL button above and get the following courses for only $397!!!

Superior Stability  Regular Price $497

Learn how tuning pins and strings really behave using simple descriptions of physics and easy to follow instructions. Stop using "recipe" techniques, "do this, don't do that" and start using feedback to figure out what works and why, and what doesn't work and how to fix it.

  Superior Unisons  Regular Price $497

The first step to tuning clean unisons that stay in tune longer, is to know what a clean unison sounds like. Don't just trust your ear. This course has a lot of easy hacks to help you know for sure if your unisons are good enough.

BONUS COURSE!!!

Double String Unison   Regular Price $497

(Click the course title to watch the FREE lessons!)
This course explains the powerful technique of tuning two strings at once, before judging the interval. Learn how to change pitch by only 0.3 cents, using only your ear. Get immediate feedback on the quality of your unisons and level of stability.

Click the PAYPAL button above and get three piano tuning courses designed to help you get clean and pure unisons that stay in tune for a long time.

That's $1491 in value for only 

$397!!!

Each of these courses sell individually for these prices. This is not a trick to make you think they are worth more than their value.

If you are not completely satisfied with the content of these courses before 30 days, just tell us and we will give you a 100% refund, no questions asked.