(SEE ALSO POST 90 AND 164)
A2-C2-E3-G3-D3-A4 3m-3M-3m-5-5 (privileged scale C major)
A2-C2-E3-G3-D3-A4 3m-3M-3m-5-5 (privileged scale C major)
or
B2-D2-F#3-A3-E3-B4 3m-3M-3m-5-D (privileged scale D major)
(For 53 cm scale length children guitars)
ALSO NOTICE THAT THE ISOCRATIC INTERVALS OF 5 THAT ACCOMPANY FAST DANCING FREE MELODIES ARE THE A2-(C2)-E3 , C2-(E3)-G3, G3-D3-(A4) THAT ARE THE IONIAN AEOLIAN AND MIXOLYDIAN MODES C MAJOR SCALE.
For the oud and for a standard 66 cm scale length guitar one tone lower is more appropriate
G2-Bb2-D3-F3-C3-F4
with privileged scale the Bb major or
F#2-A2-C#3-E3-B3-E4
with privileged scale the A major or
E2-G2-B3-D3-A3-D4
with privileged scale the G major or
with privileged scale the A major or
E2-G2-B3-D3-A3-D4
with privileged scale the G major or
for a 12-string guitar it can be the tuning
(E2:E2)-(G2G2)-(B3:B3)-(D3:D3)-(A3:A3)-(E4:E4) 3m-3M-3m-5-5
OR
(D2:D2)-(F2F2)-(A2:A2)-(C3:C3)-(G3:G3)-(D4:D4) 3m-3M-3m-5-5
Because of the part 3m-3M-3m is has plenty of many major minor triads that can be played with 1-2 frets only
And because of the part -5-5 it allows for the old isocratic with an interval of 5 playing of fast melodies.
It can be considered also a minor triad panduri in lower 3-strings consecutive higher at an interval of minor 3 of a 3-courses Tambouras.
The 5 main advantages for HARMONIC AND MELODIC IMPROVISATION of this tuning are:
1) It allows for the ancient isocratic accompanying of fast melodies with an interval of 5 by the two immediate lower strings of the string of the melody in the -5-5 part
2) The 2-octaves 7-notes scale by alternating intervals of 3 that shape the triad chords in a diatonic scale (called also melodic corridor or wheel by 3rds see post 94 and 79 ) have symmetric representations in this tuning either in the 3m-3M-3m or -5-5 part .
3) It is uniform tuning for melodies to shift among the strings in the -5-5 part .
4) The shift higher or lower by an interval of 4 or 5 vertical to strings which is usually a mutation of a melodic theme played horizontally on a string is very easy and symmetric
5) It allows for both melodic improvisation with isocratic accompanying by intervals of 5 and harmonic improvisation with easy to play in 1 or 2 frets major-minor triads.
6) It allows strumming only on the 4-lower strings or per 3-strings
It is probably the best optimal tuning when both harmonic and melodic improvisation is required in
percentages of 60%-40%.
For a 4-courses instrument like Bouzouki etc it can be wit a slight inversion in the lower triad chords E.g.
(E2:E2)-(C3:C3)-(G3:G3)-(D4:D4) (6M-5-5)
OR
(F2:F2)-(D3:D3)-(A3:A3)-(E4:E4) (6M-5-5)
(if used to tambouras or mandolin)
Or if we are used to Bouzouki (which is also open D minor)
(F2:F2)-(D3:D3)-(A3:A3)-(D4:D4) (6M-5-4)
The only reasons that one would prefer the later from the former is that the (A3:A3)-(D4:D4) allows for easy two notes chords by intervals of 3. Nevertheless, it loses its uniformity for solos in the higher 3 strings, and also some major-minor triads on them playable at 2 or 3 frets. Personally I would prefer the
(F2:F2)-(D3:D3)-(A3:A3)-(E4:E4) (6M-5-5)
The only reasons that one would prefer the later from the former is that the (A3:A3)-(D4:D4) allows for easy two notes chords by intervals of 3. Nevertheless, it loses its uniformity for solos in the higher 3 strings, and also some major-minor triads on them playable at 2 or 3 frets. Personally I would prefer the
(F2:F2)-(D3:D3)-(A3:A3)-(E4:E4) (6M-5-5)