Originally Posted by Moonbeam9067
For an example let's say I MAINTAIN this 12 key perspective and want to write a chord progression with the C/Am pair with Am being the feel of "home". I am a guitar player and using Nashville notation I might write a chord progression as 6- 4 1 5 (Am F C G) (these numbers maintain the major numbering perspective as a standard)

WHAT will BIAB do and WHY if I choose the key setting for this chord chart as either C or Am?

From the teorectical perspective you have a bit of an error. You correctly understand the "home" with all the other family of chords have a role to play in leading and pulling with respect to home. The diatonic chords for Am are: Am (i), Bdim (ii°), C (III), Dm (iv), Em (v), F (VI), and G (VII). So your case example is incorrect. If you are writing in Am, then your progression is actually i - VI -III - VII.

Having said that, I don't think this would concern a band using Nashville notation. Since I believe it is their practice to base their perspective versus the Major Scaler - which is what you did.

What does BIAB do? I just entered your progression and low and behold it does distinquishs between C and Am. My way, for Am and your way for C.

Last edited by DrDan; 12/14/25 09:44 AM.
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