tri-tone substitution

[jazzharbinger07]

What is a tri-tone substitution and are there any current recordings that display the difference between that and chord progression it's related to?Thanks 4 a serious response?

[graypencil]

At it's most basic, it is the substitution pf a flat 2 dominant seventh
in place of a five dominant in a cadence:

i.e. dmi7/ Db7 C

for:

dmi7/G7 /C

D flat being a tritone root away from the dominant root G..

there are many other uses for this sequence, but they require
more elaborate explanation

get Mark Levines "Jazz Theory " ..all will become clear

[Marty]

A tritone sub is a sub for a dominant chord. The substitue chord that you use is the dominant chord a tritone away from the root of the original dominant chord. For example, on an F7 chord, you would substitute a B7 chord. You can also notice, that the 3rd and the 7th in a dominant chord form a tritone. Hope this helps.

Marty

[graypencil]

Originally posted by Marty
For example, on an F7 chord, you would substitute a B7 chord. You can also notice, that the 3rd and the 7th in a dominant chord form a tritone. Hope this helps.

Marty

Furthermore: both notes appear as pivot tones ( 3rd and dominant 7 ) in BOTH chords ..

but with reversed functions:

F7th = Eb = seventh , A=third

B7= Eb (D#( = third , A= seventh

confused yet ??

get the Levine book!!