The Blues 6-notes scale is in semitones intervals the 1-1-3-2-3-2 or 2-1-1-3-2
or in steps of diatonic scale 7-1-1#-3-4#
If we want to tune a portable Celtic harp with levers for sharps it could be repeating a note e.g.
a#-b-c-d#-e#-f-g#-a# or in steps of a 7-notes diatonic scale 6#-7-1-2#-3#-4-5#-6#
If we want to keep the 1-1-3 invariant which is the ancient Greek chromatic tetrahord (4-notes subscale) known as parachromatic tonal , then the possible extensions to 7 notes are the
1) 1-1-3-1-1-3-2 Which is nothing else than the Byzantine parachromatic scale
It contains the 5-notes pentachord subscale 2-1-1-3 known as Samba
The Byzantine parachromatic scale is called also inverse Persian or Purvi Theta scale.
E.g. as steps of a diatonic scale 6-7-1-1#-3-4-4#-6. or in c major a-b-c-c#-e-f-f#-a
If we want to tune a portable Celtic harp with levers for sharps it could be e.g.
c-d#-e-f-g#-a#-b-c
2) 1-1-3-2-2-1-2 , which contains the 5-notes pentachord subscale 2-1-1-3 known as Samba. It is made from the samba pentachord and the diatonic tetrachord 2-2-1.
E.g. as steps of a diatonic scale 6-7-1#-2-3-4-4#-6 or in notes of c major a-b-c#-d-e-f-f#-a
3) 1-1-3-2-1-2-2 . Again it contains the the 5-notes pentachord subscale 2-1-1-3 known as Samba
E.g. as steps of a diatonic scale 6-7-1-2-3-4-4#-6 or in notes of c major a-b-c-d-e-f-f#-a
4) 1-1-3-2-3-1-1 , or as steps of a diatonic scale 7-1-1#-3-4#-6-6#-7 or in notes of c major b-c-c#-e-f-f#-a-a#-b It is as symmetric as the Byzantine (double) parachromatic scale. Actually it is made from the samba pentachord 1-1-3-2 (or by cyclic permutation 2-1-1-3 ) and its inverse 2-3-1-1.
or in steps of diatonic scale 7-1-1#-3-4#
If we want to tune a portable Celtic harp with levers for sharps it could be repeating a note e.g.
a#-b-c-d#-e#-f-g#-a# or in steps of a 7-notes diatonic scale 6#-7-1-2#-3#-4-5#-6#
If we want to keep the 1-1-3 invariant which is the ancient Greek chromatic tetrahord (4-notes subscale) known as parachromatic tonal , then the possible extensions to 7 notes are the
1) 1-1-3-1-1-3-2 Which is nothing else than the Byzantine parachromatic scale
It contains the 5-notes pentachord subscale 2-1-1-3 known as Samba
The Byzantine parachromatic scale is called also inverse Persian or Purvi Theta scale.
E.g. as steps of a diatonic scale 6-7-1-1#-3-4-4#-6. or in c major a-b-c-c#-e-f-f#-a
If we want to tune a portable Celtic harp with levers for sharps it could be e.g.
c-d#-e-f-g#-a#-b-c
2) 1-1-3-2-2-1-2 , which contains the 5-notes pentachord subscale 2-1-1-3 known as Samba. It is made from the samba pentachord and the diatonic tetrachord 2-2-1.
E.g. as steps of a diatonic scale 6-7-1#-2-3-4-4#-6 or in notes of c major a-b-c#-d-e-f-f#-a
3) 1-1-3-2-1-2-2 . Again it contains the the 5-notes pentachord subscale 2-1-1-3 known as Samba
E.g. as steps of a diatonic scale 6-7-1-2-3-4-4#-6 or in notes of c major a-b-c-d-e-f-f#-a
4) 1-1-3-2-3-1-1 , or as steps of a diatonic scale 7-1-1#-3-4#-6-6#-7 or in notes of c major b-c-c#-e-f-f#-a-a#-b It is as symmetric as the Byzantine (double) parachromatic scale. Actually it is made from the samba pentachord 1-1-3-2 (or by cyclic permutation 2-1-1-3 ) and its inverse 2-3-1-1.
