In any key, the home note (and the chord built on that note) is 1, the next note up is 2, and so on, for a total of seven notes in the scale. That way, if the key changes, you don't need to change al the note names, as the notes of the scale have the same numbers no matter what key you're playing in.
For instance, in they key of C: C is 1, D, is 2, E is 3, F is 4, G is 5, A is 6 and B is 7.
While in the key of A-flat: Ab is 1, Bb is 2, C is 3, Db is 4, Eb is 5, F is 6, and G is 7.
So if you just write out the numbers instead of note names, it's easy to change keys. Of course, you still have to know how to play in those keys.
Jazz and classical use similar systems that have been around for centuries, but Nashville gets the credit for this version of it.


Winslow Y.
06/24/23
Chris C.
Are there many variations of this system or does 99% of all Nashville studios use the exact same system?06/24/23