Yep. There are many different ways to tune a piano, none of them perfect. A tuning that is just right for one key will leave real howlers in others. (Literally

Yep. There are many different ways to tune a piano, none of them perfect. A tuning that is just right for one key will leave real howlers in others. (Literally "howlers"; it's called a "wolf tone") https://en.m.wikipedia.org/wiki/Interval_(music) https://en.m.wikipedia.org/wiki/Interval_(music) Actual pianos are usually tuned in a way that sounds pretty good most of the time, without ever sounding perfect.