ベータ版 - 近日公開
Global Sound Log
Events: 0

Records keyscale plays and global output tone groups (tones + intervals only).

General Audio Settings
Engine: waiting

Configure global engine, input and output routing for sandbox tools.

エンジンフォーム
エンジンフォーム
Audio Input Spectrum
MIDI Input Log
エンジンフォーム
Live global playback engine used by direct preview and manual play actions.
Global Playback Defaults
Explicit defaults used across the website for percussion, instrument, one-note melodic, chord or harmony, and dedicated microtonal playback contexts. Percussion or instrument playback can also use sampler presets.
エンジンフォーム
エンジンフォーム
Graphical Options

Configure navigation behavior for Graphical Harmony network view.


JolyMusic Theory Lab

Lydian Chromatic Concept: A Practical Entry Point

公開日 2026-03-01 22:44

How George Russell's gravity model reframes tonal hierarchy and expands modern melodic choices.

🌌 The Lydian Chromatic Concept: Tonal Gravity

The Lydian Chromatic Concept proposes a different tonal gravity than traditional major-key thinking: the tonic is heard most stably through the Lydian collection rather than Ionian. In practice, this means the raised fourth is not automatically treated as an avoid-note, but as a structural color that can preserve upward energy while keeping tonal center intact.


🎼 1. Vertical Organization: Lydian Stacks

Stack chords by Lydian-compatible pitch resources around the tonal center. This example compares a standard Major 7th to a Lydian voicing and a "Lydian Tonic" stack.

🎶 ABCJS: Verticality
X:1
T:Lydian Vertical Chords
M:4/4
L:1/1
K:C
[CEGB] | [CE^FG] | [C^FGB] | [CDEG^FAB] |

🎹 2. Melodic Direction: The #4 Pivot

Favor lines that pivot around the #4 to avoid default major-scale cliches. The F# acts as a structural anchor that pulls the melody toward the upper extensions of the chord.

🎶 ABCJS: Melodic Pivot
X:1
T:Lydian Melodic Pivot
M:4/4
L:1/8
K:C
C E G B ^F2 G2 | B d c B ^F G E C | ^F4 G4 |]

🔗 3. Modal Planning: Related Lydian Fields

Move between related Lydian fields by common tones, not only by functional cadences. This creates a "gliding" sensation between keys rather than the harsh "snap" of a traditional modulation.

🎶 ABCJS: Field Shifting
X:1
T:Field Shifting
M:4/4
L:1/4
K:C
[C^FGB]2 [G^cdB]2 | [A^deg]2 [B^f^ga]2 |

At JolyMusic, we apply this concept as a layering strategy: start from a clear center, define the active Lydian field, then add chromatic material by rank of tension. The result is modern color without losing navigability for performers.

Reference: The Lydian Chromatic Concept of Tonal Organization · George Russell