It is believed that when we speak of scales and chords we are talking about two things or two different parts, as poorly done. Harmonically it is exactly the same, and our staff member brain better if we join this concept because we recordariamos better. We say chords out of scales or vice versa, in the study of jazz is believed that scales out of chords, since the chord formed by triads as per example: when one touches one chord either, what one does is play the 1st, 3rd and 5th note of a scale not true? so be in the guitar or the piano, this would be the basic chord. In this chord we can define the species of the same; If it is major, minor, diminished, semidisminuido and or altered. Rubio may also support this cause. But that only put up the triad 5th? What if we would continue with the triads: 1st, 3rd, 5th, 7th, 9th, 11th, 13na, we can say that when we add triad from the 5th are chords with tensions, although in jazz music the basic chord is 4 notes IE arrives until the 7th, then if we study a chord that goes up to the 13na, Let’s note that in fact we are seeing that chord scale by intervals of triads, because the 9th is the same note as the 2nd, the 11th is the same note as the 4th and the 13na is the same note 6th, ultimately we have the scale replacing tensions, 9th, 11th and 13na by the 2nd, 4th and 6th. That is why the scale leaves the chord with his triads to the 13na. The harmony study tells us that every chord is a scale or each scale is a chord, always we are talking about the same thing, when one touches a chord, this has its corresponding scale, and when one touches a scale, this has its corresponding chord, so that no separate scale and chord since the only difference this in its execution. Very soon my web page in the relationship to jazz! Best regards!! Original author and source of the article.