Originally Posted by: gmixstudioshi there, i am reading the pink theory book and i see each maj has a relative minor
could you advise me how i would put that to practical use?

Every major scale has it's own relative minor scale. The relative minor has the same exact notes as it's parent scale; the major scale from which it is derived. But since it starts on a different note, it has the minor scale formula; there are a different set of internal intervals.

You can find the relative minor by starting on the 6th scale degree of the major scale. Another method, start on the root note of any scale and move down 3 frets.

Examples:

G major notes:

g-a-b-c-d-e-f#

Start on 6th scale degree for relative minor, E minor:

e-f#-g-a-b-c-d

C major notes:

c-d-e-f-g-a-b

Start on 6th scale degree for relative minor, A minor:

a-b-c-d-e-f-g

The relative minor scale is a mode, specifically the aeolian mode.

Look here for more info on how to understand and use this concept.

http://www.guitartricks.com/tutorial.php?input=296