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
(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
