(This post has not been written completely yet )
We explain in the next, what is the pentatonics and 6-notes harmonic double minors, and how improvisation can be done with it.
These scales are relatively unknown. We describe them below.
The pentatonic harmonic minor scale can be derived from the harmonic minor scale by truncated it to a pentatonic scale. E.g. if the C diatonic scale is the c d e f g a b c, and the pentatonic is the c d e g a c (2-2-3-2-3) while the harmonic minor is the c d e f g# a b c, (2-2-1-3-1-2-1) then the 1st pentatonic harmonic minor is the scale c d e g# a c (2-2-4-1-3). Nevertheless although both the pentantonic and the 7-notes harmonic minor can be set by the levers in C major tuned Celtic harp, the pentatonic harmonic minor cannot. What can be tuned though is the next 6-notes scale: c d e f# g# a b#=c with interval structure 2-2-2-2-1-3 which may be called 6-notes harmonic minor. A cyclic permutation of it which is the same scale (but different mode) is the 3-2-2-2-2-1 which is nothing else than the scale of Native American 6-holes flute. E.g. if such a flute is with root C, it will be c-d#-f-g-a-b-c.
Sometimes a 5th step mode of the pentatonic is used which is the c-d-f-g-a-c (2-3-2-2-3) or a still different realization of this mode of the pentatonic as the d-e-g-a-b-d (2-3-2-2-3). Now if in these versions of this mode of the pentatonic we substitute the g with g# as in harmonic minor we get the pentatonic scales c-d-f-g#-a-c (2-3-3-1-3), and d-e-g#-a-b-d (2-4-1-2-3). The former pentatonic may be called 2nd pentatonic harmonic minor and the latter 3rd pentatonic harmonic minor scale.
These scales are also easily realizable in Irish whistles and diatonic winds in general
We remind from the post 81 that THE HARMONIC PENTATONIC (not the pentatonic harmonic minor ) (AN UNNOTICED SO FAR PENTATONIC SCALE!) is derived from the first 11 harmonics of a tone and it is the
C-D-E-F-G-C (SEMITONE STRUCTURE 2-2-1-2-5)
(WITHIN THE FIRST 11 HARMONICS) which is again sometimes overtones scale of the overtones flutes! .
Sometimes a 5th step mode of the pentatonic is used which is the c-d-f-g-a-c (2-3-2-2-3) or a still different realization of this mode of the pentatonic as the d-e-g-a-b-d (2-3-2-2-3). Now if in these versions of this mode of the pentatonic we substitute the g with g# as in harmonic minor we get the pentatonic scales c-d-f-g#-a-c (2-3-3-1-3), and d-e-g#-a-b-d (2-4-1-2-3). The former pentatonic may be called 2nd pentatonic harmonic minor and the latter 3rd pentatonic harmonic minor scale.
These scales are also easily realizable in Irish whistles and diatonic winds in general
We remind from the post 81 that THE HARMONIC PENTATONIC (not the pentatonic harmonic minor ) (AN UNNOTICED SO FAR PENTATONIC SCALE!) is derived from the first 11 harmonics of a tone and it is the
C-D-E-F-G-C (SEMITONE STRUCTURE 2-2-1-2-5)
(WITHIN THE FIRST 11 HARMONICS) which is again sometimes overtones scale of the overtones flutes! .
We explain in the next, what is the pentatonics and 6-notes harmonic double minors, and how improvisation can be done with it.
