!!

4.9 Intro to ReharmonizationLearnMusicTheory.net

This page is a VERY brief intro. See also The Jazz Theory Book by Mark Levine or jazzology by Rawlins and Bahha.Copyright © 2010 by Mark Feezell. All Rights Reserved.

"V7

Substitution = Replacing chords in a progression; II-V and tritone substitution are 2 of many types.II-V Substitution = Replacing a dominant 7th (V7) chord with a II-V progression, or vice versa

II-V Substitution

Reharmonization = Changing chords in a progression, by adding, removing, or substituting chords.

G7

####I

C

###

...Becomes... "II7

Dmin7

$$$V7

G7

$$$I

C

###

!!" 7th

3rdNotice: the original 3rd (B) becomes the new 7th (Cb), and the original 7th (F) becomes the new 3rd (F).not just 3rd/7th, but all notes (even altered notes) in the 1st chord become notes in the 2nd. For instance, C#is the #11 of G and the root of Db (see below). The only note that doesn't translate is the unaltered 11th (4th).

Tritone = Interval of 3 whole steps; ex: G to C# (or G to Db) = G to A + A to B + B to C#Tritone substitution = replacing a dominant seventh chord w/one a tritone away from the original

Tritone Substitution

G7%%%(5th omitted)

F and B§(=Cb)are common tones! " 3rd

7th

D¨7%%%&&(Tritone away from G)

"Root

Db with all alterations

$b9

$&§9

G showing all alterations

$'#9

$(3rd

$Root

#11

$($& b9

5th

$'$) §9

b13

$&$&#9

§13

$'$'3rd

7th

$$#11

Root

$$5th

b9

$&$&b13

§9G showing all alterations

$'$) §13

#9

$($&

7th

3rd

$$& Root

#11

$($&

5th

$'b13

$&§13

$'7th

$Root

%

"Tritone substitution is often used to create chromatic bass lines, like this:

Any ALT scale will use the same notes as the lydian dominant scale a tritone away (compare the chart above).G altered scale (G7alt)

$b9

$&#9

$(3rd

$#11

$(b13

$&7th

$ $=

Db lydian dominant scale (Db7#11)

" $&§9$&

3rd$

#11

$5th

$&§13

$&7th

$& $&

!!"II7

Dmin7

$$$V7

G7

$$$I

C

###

...Becomes... "II7

Dmin7

$$$SubV7

D¨7

&& $$$

I

C

###'