Technical Playing of Andalusian Lute and Andalusian Harmony/Le jeu Instrumental du Luth Andalou et l’Harmonie Andalouse
Technical playing of Andalusian Lute does derive from an original technical appliance of Plectre on the Strings : player must touch at least two strings.
As the Tuning of Andalusian Lute does not derive from ordinary one, meaning by ascending quarte or fifth, but according to an ascending octave, descending fifth and ascending quarte, player must enjoy making chords on Andalusian Lute by playing in at least two strings.
Playing so Andalusian Modes and Genres, appears the Original Andalusian Harmony
I finally discovered the reason of this strange and wise tuning.