Lydian Chromatic Concept of Tonal Organisation – Part 2

Theoretical Foundation

The Lydian Chromatic Concept (LCC) is based on a really simple foundation. George Russell noted that 5th is is the strongest interval (this is actually harmonically correct with the fifth coinciding with the third harmonic). Russell took this basic observation and formulated some ideas around it such as what happens if we create a scale based on a ladder of ascending fifths? More on that shortly.

“The establishment of the fifth as the strongest harmonic interval represents the most important contribution of the overtone series to the fundamental principle of the Lydian Chromatic Concept of Tonal Organization – the Principle of Tonal Gravity.” 1

So to Russell, identifying the fifth as the strongest interval was really important because it led him to the overtone series, and subsequently the principle of tonal gravity. Let’s take a look at those next.

Overtone series

Circle of FifthsIf you take the interval of a fifth and stack 6 of them on top of each other you get a series of notes. This is easy to visualise using the cycle of fifths (left). Just divide the circle in half from any note and move clockwise.

Take C as an example root note.

C - G - D - A - E - B - F#

If you reorder the notes alphabetically you get the following.

C - D - E - F# - D - A - B

What scale is that? It’s the lydian scale and not the major scale (the ionian mode). This stack of notes (fifths) is the harmonic series.

Now compare C lydian with C major:

Lydian:  C - D - E - F# - D - A - B
Major:   C - D - E - F  - D - A - B

The only difference is the fourth, F. In comparison to the major scale the lydian fourth is raised a semitone. This actually has a really interesting and positive effect.

In the major scale the fourth is problematic because it creates an unpleasant dissonance when played against the diatonic C chord, Cmaj7. If you add the fourth – or the eleventh because they are the same thing – to a major 7 chord it creates a minor 9 interval against the third of the chord, E. This doesn’t happen in the lydian scale because of the raised fourth.

Mark Levine confirms the problems of the fourth in the major (ionian) scale by referring to it as an avoid note when harmonising the scale.

Go to a piano and play a root position [Cmaj7] chord with your left hand while playing the C major scale with your right hand… There is a note in the scale that is much more dissonant than the other six notes. Play the same chord again with your left hand while you play the 4th, F, with your right hand… This is a so-called “avoid note”. 2

Because the lydian scale has a raised fourth it doesn’t have an avoid note.

Examples

Here’s an example of Cmaj7 with the fourth (or 11) on top.

And now an example of Cmaj7 with the raised fourth (or #11) on top.

And just to round things off here is a comparison between the overtone series with the fourth on top – as in the major scale – and then the raised 4th on top – as in the lydian mode.

Notice this second chord has a pleasing open sound to it. It’s actually Cmaj13(#11) which is the result of simply playing all the notes of the harmonic series – and therefore the lydian scale – at the same time.

Tonal gravity

Russell talks about the lydian tonic rather than the usual major scale tonic note. To Russell, there is a tendency for music that follows the LCC to want to move down the overtone series towards the lydian tonic.

Tonal Gravity, or “tonal magnetism,” within a stack of intervals of fifths flows in a downward direction. 3

This is no surprise; it’s consistent with back-cycling the cycle of fifths to create strong root movement. We covered that in the post on strong root movement (remember that back-cycling means notes are really moving down a fourth).

So, the lydian scale is completely consistent with back-cycling; all the notes you need are in the scale. You can’t do that with the major scale. Looking at the C example, if you were in C major (ionian) the fourth would present a problem whereas the raised fourth of the lydian scale fits right in.

Goal orientation

We have seen in previous posts about chord families and strong root movement how we create forward motion in music – at least in music based on the major scale – by creating tension that needs to be resolved. Russell agrees and calls this horizontal motion.

Russell defines the nature of the major scale as:

THE STATE OF BECOMING A FINALITY – the state of linear, horizontal goal orientation; the state of permanent tension 4

By contrast he sees the lydian scale as lacking this tension but flowing naturally down the stack of fifths to the lydian tonic. Of the lydian scale he says:

THE STATE OF BEING A UNITY – A unified tonal gravity field in which gravitational energy is passed down a ladder of fifths to its lowermost tone: the Lydian Tonic. 5

Basically, what Russell is saying is that the lydian scale lacks the goal orientation of the major scale. The major scale results in tension that wants to resolve to the major scale tonic (e.g. sub-dominant to dominant to tonic chord movement). The lydian scale lacks this because each note just wants to resolve to the previous note in the harmonic series.

He refers to the lydian scale as having a vertical nature rather than the major scale’s horizontal nature and describes the state of unity present in the lydian scale. As I understand it, unity refers to how each note in the lydian scale has an equal tendency to resolve to the previous note in the harmonic series.

Wrapping up

Russell goes in to much more detail than that given above but these are the key take-away point for me:

  • Creating an overtone series by stacking fifths on top of each other gives you the lydian scale, not the major scale.
  • Moving down the overtone series is equivalent to back-cycling the cycle of fifths to create strong root movement.
  • The fourth in the major scale is an avoid note. This is not an issue with the lydian scale because of the raised fourth.
  • The lydian scale lacks the tension inherent in the major scale by existing in a state of unity.

Here’s a video by Walk That Bass on YouTube covering similar ground:

To Russell, the features of the lydian scale such as those described above make it a more ‘scientific foundation’ for a theory of music than the major scale, a theory Russell called the Lydian Chromatic Concept of Tonal Organisation.

But it doesn’t end there! Russell goes on to explore what happens if you add additional fifths to the overtone series and derives a set of scales including those extension notes. We’ll start covering that in the next post.

Back to Part 1 (index to posts in the series)

References

  1. Russel, G (2001). The Lydian Chromatic Concept of Tonal Organization, 4th Edition, p.3
  2. Levine, M (1995). The Jazz Theory Book, p.37
  3. Russel, G (2001). The Lydian Chromatic Concept of Tonal Organization, 4th Edition, p.3
  4. Russel, G (2001). The Lydian Chromatic Concept of Tonal Organization, 4th Edition, p.7
  5. Russel, G (2001). The Lydian Chromatic Concept of Tonal Organization, 4th Edition, p.8

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