A handy little chord map.

[camsr]

Why only in major?

If you want a minor version you can either -

transpose it to a minor key.

or treat the vi as tonic. (modal shift)

I forgot it's the vi not the iii thanks it's been a while.

[amistry]

That is actually genius. Genius! But rather boring.

[peppy197]

I get it : it's the ultimate hit recipe.

you need boobs, ass, and a sweet sexy melody = bass

then its a hit

[Rahul_B]

so where's the black and white notes? wtf??
Get real. If you do understand harmonics and theory and stuff, why the hell do you need this? Whatever it is.

lol, "where's the black and white notes"

The roman numerals represent triads in a Major scale. Triads are stacked thirds. So in C major the I chord is CEG, etc etc.

In a major scale the triads are:

I ii iii IV V vi vii* I

The arrows represent where the chords tend to want to go naturally. ie: vii* and V gravitate towards I.

Try it, play a C Major scale and then play a BDF chord or a GBD chord. They both will have tension that is released when you play a CEG chord right afterwords.

[waveriderarts]

It seems straightforward enough. At any starting point, you can move to the next via an arrow, and it sounds good. Allegedly.

yeah but also sounds like deja vu!

[robogone]

It seems straightforward enough. At any starting point, you can move to the next via an arrow, and it sounds good. Allegedly.

yeah but also sounds like deja vu!

Ah, so that's how Crosby, Stills, Nash and Young recorded that album.