Originally Posted by: pedrinho.cobos

Hi, not sure if this been clarified anywhere else on the site but it still not clear to me why is the sixth degree of a major scale the root of a relative minor scale?

Because if you start on the 6th degree of the major scale you get the interval pattern of the natural minor scale. The result is that you get the same collection of notes, but with a different starting point.

C major:

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

A minor:

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

Only these 2 scales share the same notes. For every major scale there is a relative minor that shares it's notes. I cover this concept in this lesson.

https://www.guitartricks.com/lesson.php?input=28260&s_id=2387

Hope this helps!