Chord Theory · Dead Sea Chords

Dead Sea Chords — The Vertical Framework

From Dead Sea Scales: The 5 Missing Notes™ by Christopher Dean

Dead Sea Scales maps music horizontally — notes played in sequence. Dead Sea Chords maps the same system vertically — notes stacked simultaneously. Same 10 operations. Same 5 families. Different axis.

The Principle

Every 7-note scale produces 7 triads and 7 seventh chords by stacking 3rds. When you change one note in the scale, every chord containing that note changes. One missing note doesn’t just alter the scale — it rewrites the harmony.

The Diatonic Chord Set

Degree	Triad	7th
I	C maj	C maj7
II	D min	D min7
III	E min	E min7
IV	F maj	F maj7
V	G maj	G dom7
VI	A min	A min7
VII	B dim	B m7♭5

How the Missing Notes Change the Chords

Blues (♭3: E→E♭): The I chord becomes C MINOR. The III chord becomes E♭ augmented. The VI chord becomes A diminished. A minor-major 7th appears — a chord that doesn’t exist anywhere in diatonic harmony.

Harmonic (#5: G→A♭): The I chord becomes C AUGMENTED. The V chord becomes A♭ diminished. A fully diminished 7th appears for the first time.

Quest Else (#4 = Lydian): The II chord becomes D MAJOR. This is George Russell’s Lydian harmony — the major II chord that defines the Lydian sound.

Bebop Else (♭7 = Mixolydian): The V chord becomes G MINOR. The VII chord becomes B♭ MAJOR. The dominant chord disappears entirely.

Altered Dominants = The 5 Missing Notes

Every “altered” chord extension used in jazz is a Missing Note added to a dominant 7th chord:

Altered Chord	Extension	= Missing Note	= Family
7♭9	♭9 = ♭2	Melodic	Yellow
7#9 (Hendrix chord)	#9 = ♭3	Blues	Cyan
7#11	#11 = ♭5	Quest	Orange
7♭13	♭13 = ♭6	Harmonic	Pink
dom7 itself	♭7	Bebop	Green

The Hendrix chord — the most iconic “dirty” chord in rock — is literally a dominant 7th with the Blues note stacked on top. Every altered chord extension that jazz theory treats as advanced is one of the 5 Missing Notes viewed vertically.

The Numbers

539 individual chords documented across 11 families. 48 chord qualities — 25 historically named (maj, min, dim, aug, dom7, min7, maj7, etc.) plus 23 DSS-exclusive voicings that only appear in the extended families. These are chords that exist in the system but have never been cataloged because nobody had the framework to find them.

Scales and chords are not two systems. They are one system viewed from two angles. Play the notes in sequence = a scale. Stack them = a chord. The same 10 operations. The same 5 families. The same framework. Different axis.

— Christopher Dean, Dead Sea Scales