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Showing posts with label 182. SIMPLE RULES OF INTERVALS FOR COMPOSITION OF BEAUTIFUL MELODIC THEMES. Show all posts
Showing posts with label 182. SIMPLE RULES OF INTERVALS FOR COMPOSITION OF BEAUTIFUL MELODIC THEMES. Show all posts

Friday, April 5, 2019

182. SIMPLE RULES OF INTERVALS FOR COMPOSITION OF BEAUTIFUL MELODIC THEMES

We will formulate rules of combinations of intervals of 1,2,3,4,5,7 semitones  (Intervals of 2 of 3 of 4 or of 5 as it is used to say). Such rules are used to compose beautiful melodic themes or improvise inside a  vector-chord (see also post 159) .


(3,4)
1) Combination of intervals of 3, in othre words of 3 or 4 semitones

We combine the 3+4=7 mostly as it gives arpeggios of minor major chords ans rarely the 3+3=6 and 4+4-8 that give arpeggios of diminished and augmented chords.

We also alternate the 3+4 with the 4+3 as so it  mainly in the chords of a diatonic scale.


(3,4-5)
2) Combination of intervals of 3, in other words of 3 or 4 semitones and intervals of 5 in other words of 7 semitones.

We combine by alternating them around the 5 : 3-5-4 and 4-5-3, 4-5-3-5-4 etc

(3,4-7)
3)  Combination of intervals of 4, in other words of 5 semitones and intervals of 5 in other words of  7 semitones


Similarly for the 7 : 3-7-4 and 4-7-3, 4-7-3-7-4 etc

(5-7)
4)  Combination of intervals of 4, in other words of 5 semitones and intervals of 5 in other words of  7 semitones

We alternate 5 and 7 : 5-7-5 etc

 (5-5)
5)  Combination of intervals of 4, in other words of 5 semitones


We avoid repetitions of 5

6)  (7-7)
Combination of intervals of 5, in other words of 7 semitones

We allow up to 3 repetitions  of 7 7-7 , 7-7-7

(1,2-3,4)
7) Combination of intervals of 3, in other words of 3 or 4 semitones and intervals of 2 in other words of 1 or 2 semitones

We combine 1 freely with 3, 4  1-3, 1-4 as it gives intervals of minor 3 and of 4 that exist in arpeggios of major minor chords.

(1,2-5)
8) Combination of intervals of 4, in other words of 5 semitones and intervals of 2 in other words of 1 or 2 semitones

We  combine only 2 with 5 2+5 =7, 5+2=7  as it gives intervals of 5 that exist in arpeggios of minor and major chords.


(1,2-7)
9) Combination of intervals of 4, in other words of 5 semitones and intervals of 2 in other words of 1 or 2 semitones

We combine freely the 1, 2 with 7  1+8= 2+7=9 as it gives intervals of 6 that exist in arpeggios of (inverted) minor and major chords.

10) (1,2-1,2)

We combine freely 1-2 and 2-2 as it gives intervals of 3 of the major minor chord arpeggios