I was looking to form chromatic scales so I was curious as to if anyone knew the formula to find the overall frequency of a chord to make sure that is infact chromatic in the scale your trying to use it in. I don't want to be using chords out of the third octave if the scale I'm trying to present is out of the open chord groups. I'm looking for better and more information on chords in a diatonic scale. ive found different variations of this but I was hoping to find a better answer seeing as how every key isn't exactly the same and they can vary to show or excentuate different sounds in a major or minor chord one variation of a scale I found is a G major I g, g6, gmajor7,g6/9,gmajor9
ii Am, Am7, Am9, Am11, Am13
iii Bm, Bm7, Bm7add11
IV C, C6, Cmajor7, C6/9, Cmajor9, C6/9#11, Cmajor9#11
V D, D7, D9, D9(13)
vi Em, Em7, Em9, Em11
vii F# half diminished, F#m11flat5, F#m11flat5flat13
ive found a even more drawn out version but I'm not about to type it all. so my biggest question starts at is there some sort of equation I can use to figure out which chords to use for a more general overall sound. my next question Is about octaves and its a matter of is there an equation to find the mean or somthing of that nature of the note frequencies of a chord to find which chord will better fit into the octave group that you are trying to chromaticly make like I wouldn't want to play a ton of open chords and pretend all bar chords are the same and play a barred g major and act like it fits. that's all I can think of at the moment but I have a few others so if they pop in ill hit you with those too. thanks for the vast knowledge in advance.