This is the tuning
D2-G2-C3-G3-D4-A4 tuning (for a children's 53 cm scale length guitar or on a mandola)
Because the highest 3 strings D2-G2-C3 are of equal intervals of 4 apart, it allows for ordinary major and minor chord triads with easy dominant and major 7nths.
Notice that the 4-strings G2-D4-A4 is already an Irish bouzouki tuning
For the Oud and even a 66cm scale length standard 6-string guitar it is more appropriate the tuning one tone lower :
C2-F2-Bb3-F3-C4-G4
An alternative is the inverted Bouzouki-tambouras separated by an interval of that is 4-5-5-5-5
or
C2-F2-C3-G3-D4-A4 tuning (for a children's 53 cm scale length guitar or a mandola)
and for the Oud
C2-F2-C3-G3-D4 (see also post 163)
The above tuning seems to be one with the almost maximum number of strings an interval of 5 apart which also allows for easy 1 or 2 frets major-minor triads
D2-G2-C3-G3-D4-A4 tuning (for a children's 53 cm scale length guitar or on a mandola)
Because the highest 3 strings D2-G2-C3 are of equal intervals of 4 apart, it allows for ordinary major and minor chord triads with easy dominant and major 7nths.
Notice that the 4-strings G2-D4-A4 is already an Irish bouzouki tuning
For the Oud and even a 66cm scale length standard 6-string guitar it is more appropriate the tuning one tone lower :
C2-F2-Bb3-F3-C4-G4
An alternative is the inverted Bouzouki-tambouras separated by an interval of that is 4-5-5-5-5
or
C2-F2-C3-G3-D4-A4 tuning (for a children's 53 cm scale length guitar or a mandola)
and for the Oud
C2-F2-C3-G3-D4 (see also post 163)
The above tuning seems to be one with the almost maximum number of strings an interval of 5 apart which also allows for easy 1 or 2 frets major-minor triads
It has the minor-major triads at lowest pitch
THE LATER TUNING ALLOWS TO PLAY IN MELODIES THE PARTS OF THE MELODIC THEMES OF INTERVALS OF 2 OR 3 HORIZONTALLY WHILE SΗIFT THE MELODIC THEME BY INTERVALS OF 4, 5 OR 8 VERTICALLY (FOR MELODIC THEMES MUTATIONS). IN TOTAL I FIND THIS TUNING VERY CONVENIENT FOR MELODIES IMPROVISATION.
THE LATER TUNING ALLOWS TO PLAY IN MELODIES THE PARTS OF THE MELODIC THEMES OF INTERVALS OF 2 OR 3 HORIZONTALLY WHILE SΗIFT THE MELODIC THEME BY INTERVALS OF 4, 5 OR 8 VERTICALLY (FOR MELODIC THEMES MUTATIONS). IN TOTAL I FIND THIS TUNING VERY CONVENIENT FOR MELODIES IMPROVISATION.
