Example1 Quartal Harmony – Blues Scale, Harmonised Major Scale and Modes
Here are four sets of quartal voicings that are useful in many musical styles.
G Blues scale, harmonised close voicings on top four strings. All the shapes are the same using stacked 4th intervals and are led by the top note of
Bb, each chord voicing following the G Blues scale (ie G, then then C etc).
C Major harmonised in 4ths on the middle four strings. All notes are 4ths but to fit within the Major scale they will be either perfect or augmented 4ths.
Applied quartal harmony, G Mixolydian on the top four strings. This shows the application of quartal structures as they agree with G Mixolydian (G-A-B-C-D-E-F). Notice each chord’s top note follows Mixolydian itself. The chord names are for analysis and describe the different voicings of dominant chords, G11 and G13.