The Lydian Chromatic Concept of Tonal Organization is a 1953 jazz music theory book written by George Russell.

Russell's work postulates that all music is based on the tonal gravity of the Lydian mode.

[3] Russell builds a prototype chromatic scale starting on the Lydian Tonic by stacking fifths, skipping the interval between the seventh and eighth tones, and placing the skipped tone at the end for having the lowest level of tonal gravity.

Art Farmer said that it "opens the door to countless means of melodic expression"[6] and critic Joachim-Ernst Berendt described it as "the first work deriving a theory of jazz harmony from the immanent laws of jazz" and as "the pathbreaker for Miles Davis' and John Coltrane's 'modality'".

[7] Bill Evans and Miles Davis used the theory[8][9] to record modal jazz such as the album Kind of Blue.