In basketball we have the Final Four (and Sweet Sixteen)
In school we learned the Three R's
On the evil side of the equation, we could think about the Seven Deadly Sins
or maybe the Four Horsemen of the Apocalypse
Here's a new one to consider:
THE FEARSOME FIVE
Why these notes?
(if it isn't obvious, which it should be)
They represent that perfect storm of of "out of tune" and "shows up a lot in your music"
I wonder, what percentage of our tuning troubles would go away if those five notes were always in tune.