As shown, we count 2 basic positions (3rd or 7th to the low) for left hand voicings, to be used to espose a tune or to support a solo. The are only few exception (see below) for some kinds of chords.
In order to give a criteria easy to be applied for each Key, the below used numbers refer to the correspondant tone of the major/minor scale of the voicing: this way the concept can be ‘transposed’ on every key: that’s why following example will be in a different key each time.

Maj7 (with major 3rd and major 7th)
Ex: CMaj7, 7+, C (delta)
3rd position notes (degrees major scale):
3 5 7 9, or 3 5 6 9
7th position :
7 9 3 5 (or 7 9 3 6), or 7 1 3 5( 6)
Maj6
Ex. Cmaj6, C6
3rd position notes:
6 9 3 5
7th position notes:
3 5 6 9

Minor (with min 3rd and maj 7th)
Ex. F-, Fm6, F-(maj7)
3rd: b3 5 6 9
7(and 6)th: 6 9 b3 5, 7 9 b3 5
Minor 7 (with min 3rd and min 7th)
Ex. Bb-7

3rd: b3 5 b7 9
7th: b7 9 b3 5
Dominant 7 (with maj 3rd and minor 7th)
Ex. A7 or A9 or A13
3rd: 3 6 b7 9
7th: b7 9 3 6
Dominant Alt. 7
This Chord has altered tensions (5th and 9th) and refers to the Altered Scale (built on the VII° of the Melodic minor Scale) and gives the same results of the Triton Substitution (a Dominant chord which Root is a Three tones - 6 half-tones up or down far). Using our number system, the V°7 voicing 3 6 b7 9 has same notes of bII°7 b7 9 3 6.
3rd: 3 #5 b7 #9
7rd: b7 #9 3 #5
Dominant Alt. 7b9
This Chord has b9 tensions ( and refers to the Scale built on the V° of the Harmonic Minor Scale. These voicing expecially work on minor Turn Around (IIm7b5 - V7b9 - I):
3rd: 3 b7 b9
7rd: b7 b9 3 b6
Diminished Chord (with min 3rd, flat 5th and maj 7th)
Ex. G°, Gdim
In the diminished harmony, everything repeats every minor 3rd(4 half-tones), so we have three diminished scales. The particular structure of these scales (tone-halftone) allows us to built a voicing on each cordal note of the chord, everyone having the same intervals frame : 1 - b3 - b5 - maj7
Ex. G dim –> cordal note are G Bb Db E: we can build a voicings on each of these notes using the diminished chord itself (ex. A, which on my opinion sounds a little bit mad) or substitute the 6 with the maj7, gettin’ a better ‘jazzin sound’ (ex. B). Just play the example and try first to get familiar with the voicing and then to transpose the example in other keys using the numbers system shown: as explained, you can apply diminished harmony to dominant chords getting interesting lines! In the given example, try to play those voicings adding
a C on the bass, and you’ll start to have an idea of how it works!
1st position: 1 b3 b5 maj7
b3rd position: b3 b5 6 9
b5th posistio: b5 6 1 11
6th positiion: 6 1 b3 #5
Half - Diminished (with min 3rd, flat 5th and min 7th)
Ex. D-7b5
This chord comes from armonic minor harmony and in a minor turnaround it preceeds the dominant 7b9 chord explained above, and to improvise on it we can use the armonic minor scale starting 1 tone below the root of the half-diminished chord (Ex. D-7b5 —> C armonic minor). As well as diominished voicings we have a position that can be built on every cordal note:
1st: 1 4 b5 b7
3rd: b3 b5 b7 1
5th: b5 b7 1 4
7th: b7 1 b3 b5
As we will see, in the minor turn around all these position can be combined with the Dominant 7b9 chord.
Once at this point, all the positions seen above can can be expecially applied to a Turn Around progression II - V - I …


















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