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George Allen Russell (June 23, 1923 – July 27, 2009) was an American jazz pianist, composer, arranger and theorist. He is considered one of the first jazz musicians to contribute to general music theory with a theory of harmony based on jazz rather than European music, in his book Lydian Chromatic Concept of Tonal Organization (1953).
Lydian mode on C Play ⓘ. Thirteenth chord constructed from notes of the Lydian mode. Play ⓘ Russell's original six Lydian scales [1] The Lydian Chromatic Concept of Tonal Organization is a 1953 jazz music theory book written by George Russell. The book is the founding text of the Lydian Chromatic Concept (LCC), or Lydian Chromatic Theory (LCT).
The Lydian scale can be described as a major scale with the fourth scale degree raised a semitone, making it an augmented fourth above the tonic; e.g., an F-major scale with a B ♮ rather than B ♭. That is, the Lydian mode has the following formula:
In contrast, in the chord-scale system, a different scale is used for each chord in the progression (for example mixolydian scales on A, E, and D for chords A 7, E 7, and D 7, respectively). [5] Improvisation approaches may be mixed, such as using "the blues approach" for a section of a progression and using the chord-scale system for the rest. [6]
Jazz chords are chords, chord voicings and chord symbols that jazz musicians commonly use in composition, improvisation, and harmony. In jazz chords and theory, most triads that appear in lead sheets or fake books can have sevenths added to them, using the performer's discretion and ear. [ 1 ]
Lydian chords may function as subdominants or substitutes for the tonic in major keys. [3] The compound interval of the augmented eleventh (enharmonically equivalent to ♯ 4, the characteristic interval of the Lydian mode) is used since the simple fourth usually only appears in suspended chords (which replace the third with a natural fourth, for example C sus4).
"Un Poco Loco" is in thirty-two bar form. [4] It uses the lydian scale, incorporating chords overlapping chords to imply a polytonality (D major 7 over C major 7: CEGBDF#AC#) with the improvisation based on an alternating polytonality and an altered dominant chord.
Dickenson was a member of "The World's Greatest Jazz Band", the house band at The Roosevelt Grill in New York City. [3] He also performed at the same venue in a smaller group that featured him alongside trumpeter Bobby Hackett. [1] Dickenson is in Art Kane's photograph, A Great Day in Harlem, which includes trombonist Miff Mole.