Try playing these chords on your instrument one after the other to get the feeling of the quartal harmony. Forming the F chord: C D E F G A B C D E F G A B.Forming the D chord using intervals of fourths: C D E F G A B C D E F G A B.So how could we form chords using intervals of fourths? Just jump every three notes! That’s why jumping in twos we have intervals of thirds. In other words, if we consider that the source note is the first degree, the next note is the second degree, and the next is the third degree. Forming the E chord: C D E F G A B C D E F G A Bīy jumping every two notes on the scale, we are using intervals of thirds.Forming the D chord: C D E F G A B C D E F G A B.C major scale notes: C D E F G A B C D E F G A B.Note: we will place the scale in two octaves to make the formation of the chords more clear. We saw that on the C major scale, for example, to form a certain chord it would be enough to start at the note of the chord in question and jump every two notes, as in the example below. This starts from the very principle of chord formation in a tonality, as we studied in the topic about chords of a key. You can do this test for all chords in a major key and you will see that the intervals are always on thirds. Between G and B we have four semitones (major third). Between E and G we have three semitones (minor third). The distance between C and E is four semitones (major third). These intervals can be major or minor thirds, forming major and minor chords, major chords with major seventh, major chords with minor seventh, etc.įor example, the Cmaj7 chord has the notes C, E, G, B. We have already learned in previous topics that chords are formed from intervals of thirds.
Basically, the idea is to build chords using intervals of fourths instead of intervals of thirds. Quartal harmony, as the name implies, refers to intervals of fourths.
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