(Music) Jazz - Chord Scales Via Modal Theory Part 1.pdf

XI. Chord-Scales Via Modal Theory (Part 1)
A. Terminology And Definitions
Scale: A group of notes assembled in some sort of of ascending and descending order. A scale normally covers
an octave, and usually moves in steps consisting of Major or Minor 2nds.
Diatonic Scale: The 7 note scale that is derived from the first 7 notes of a cycle of 5ths. (Eg. F C G D A E B =
C D E F G A B C or D E F G A B C D, etc.) It consists of 5 whole tones and 2 semi-tones with the semi-tones
spaced as far apart as possible.
Chord-Scale:
A scale as seen in relation to a chord. Chord-scales are used as raw tonal material, a pitch collection, from
which to derive melodies and/or chord voicings on a particular chord type in particular harmonic situations.
Chord Tone (abbr: CT):
One of ponent tones of a chord. Usually 1, 3 (or 4 in a sus4 chord), 5 or 7 (6 in a 6th chord). Usually
labeled as an interval which is smaller than an octave (. less than 8).
Non Chord Tone (NCT):
A note that is not normally ponent of the chord being considered.
Available Tension (T) (sometimes AT):
Any Non Chord Tone (NCT) that blends vertically with a chord when held for a long duration or accented.
Usually found a major or augmented 2nd above a Chord Tone (CT) when examining a chord-scale. Usually
labeled as pound interval (9, 11 or 13) in a chord voicing.
When held for a long duration a tension will