The chord whose root is the tonic of the scale is called Tonic Chord. These 7 roots are precisely the notes of the scale. Therefore, in a Major or minor scale there is only one tonic, but there are 7 roots, one for each chord associated to the scale. The Tonic is вЂњthe first note of a scaleвЂќ (that is, the I degree) and the Root is вЂњthe first note of a chordвЂќ (that is, the note above which the 3 rd intervals are superimposed). When talking about scales and their associated chords, it is worthwhile to clarify the difference between Tonic and Root. Major and minor scales, besides serving us to create melodies as well as providing the most suitable chords to accompany them, are the key to relate chords among them, for the chords associated to any Major or minor scale always form a set of chords which are affine among them. The task of adding chords to a melody is known as harmonization of melodies and represents an important part in the study of Harmony. The 3 and 4 note chord types appearing in Major and minor scales are precisely all those studied in chapters 9 to 11.

But if we consider the A harmonic or melodic minor scales, some different chord types will then appear. If we had considered the A natural minor scale instead of the C Major scale, we would have obtained the same previous chords, but in another order, that is, assigned to different scale degrees. So, this way we begin to relate chords among them, instead of considering them as isolated and independent things. 18 also tell us that the chords contained in them are affine among them. Therefore, those chords are the chords that will be found, in most cases, in the scores or musical passages which melodies are created with the notes of the C Major scale. That is to say that they represent the вЂњfirst optionвЂќ to add an accompaniment to a melody written with the notes of that scale. 18 are, simply, those associated, in a natural way, to the C Major scale. This means that, in a composition which melody is in C Major, we can find other chords than those above mentioned or, we can find, even in the melody, some notes outside this scale.Д¬hords in Table 4 and in Fig. On the contrary, everything is allowed and nothing is prohibited with the aim of creating beauty or, simply, producing different emotions. Logically, Music, as in every art, has no exact rules or strict limits. C Major scale and the 3 and 4 note chords associated to this scale. As an example, the information in Table 4 is again shown in Fig. The musical system of script provides us with an easy and compact way for representing both the melodies and the chords. C Major scale and 3 and 4 note chords associated to this scale. In that Table, both 3 and 4 note chords have been considered. Thus, for example, a musical passage written in C Major will have an accompaniment that, in most cases, will be formed by the chords shown in Table 4. And, also in a general sense, this accompaniment consists in chords built by superimposing 3 rd intervals (Major or minor) on every scale degree. On the other hand, each melody usually has an accompaniment that is normally composed by notes belonging to the same scale as the melody.

Generally, a melody consists of notes belonging, either to a Major or to a minor scale. Up to now, we have studied the chords as if they were independent to each other, that is, without saying which chords are related with which other chords. Hexatonic scales and their associated chords Diminished scales and their associated chordsДЎ6. Chord finder and the major-minor systemДЎ5.

Chords and their notes