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Thursday, August 12, 2021

395. RANDOMIZING THE SEQUENCE OF AN HARMONIC CYCLE OF CHORDS BY INTERPOLATING MELODIC AND SUPERCHROMATIC CHORD TRANSITIONS BY MAJOR CHORDS .60% harmonic chord transitions, 30% melodic transitions, 10% superchromatic transitions.

 RANDOMIZING THE  SEQUENCE OF THE CYCLE BY INTERPOLATING MELODIC AND  SUPERCHROMATIC CHORD TRANSITIONS. 60% harmonic chord transitions, 30% melodic transitions, 10% superchromatic transitions. 

When we are as above ina harmonic 6 cycle or 7 cycle or 8 cycle , instead of runningthe cycle with its harmonic sequence order, we may randomize the sequencing by utlizing 


a) Super-chromatic transitions, in other words transition that the roots  of the chord diffe by a semitone onle (thus only 2 such transitions possible)

b) Melodic trasnitions, in other words transitions that the roots of the chords differ by a mior or major 3rd. In such melodic trasnitions the musical effect is more exciting when both chords are of major type.


An example of such a nice harmony is  the song "song for two Pamelas" by David Grisman and Tony Rice.

https://www.youtube.com/watch?v=w9YdcbzcL6Y&ab_channel=TonyRice-Topic

Here the 7 cycle is 7M7-> 3M7-> 6m (6M7)-> 2m (2M7)-> 5M7-> 1M-> 4M

and th red pairs are melodic trasnitions while the blue pair superchromatic transitions

In other words we avoid the simple chromatic and not super chromatic, transitions. 

6m  4M  3M7

6m 6M7 2m

5M7  1M  4M

4M7 3M7 6m

6M7 1M7 4M 

4M7 2M7  5M7 

5M7 3M7 6m

4M7 3M7 2m 

4M7 6M

6m 2m 7M7

7M7 3M7 6m

6M7 2m

5M7 1M 


CHROMATIC TONALITY OVER THE  RHYTMIC AND HARMONIC PATTERN  OF 12-BARS BLUES.


In the blues (that may be somehow considered a type of rapsody concept collective composition and improvisation) the rhythm is  also standardized to e.g. 12-bars blues, which corelated the rhyrhmic measures with the sequence and duration of the 3 chords 1M, 4M 5M or  1M 2m 5M.

And we may subtitute 


5M with 3m or  7d

But more generally in chromatic tonality we may substitute one of the basic 3chords with some ofthe chords of the chromatic tonality thus we may substitute


1M  with 3M or 6M (besides 3m, 6m)

4M with 2M or 6 M (Besides 2m, 6m)

5M with 3M or 7M. (besides, 3m, 7d) 

e.g. 

1M1M1M1M
2m2M6M6M
3M5M1M1M