Unisons are the most important and most difficult skill to master in piano tuning.

ALL piano tuners, no matter how they tune, must master this skill.

There are two steps to mastering the clean unison. Knowing what it sounds like and getting it to stay.

Before you worry about getting it to stay, you need to get it get it to be clean.

This course explains the theory and trains your ear to know for sure when your unisons are clean.