However, there is an A in C6, hence why we use C6 instead of CMaj7 and why it’s called the sixth diminished scale instead of the seventh diminished scale. When you reach the Ab, you realize you can’t harmonize the A because it isn’t in the chord of CMaj7 or Bo7. Think about what would happen if we were to use CMaj7 instead of C6. The reason is also related to the I-V-I chord movement. The third thing is that we are using C6 chords instead of CMaj7. By adding the Ab, we’re adding a note that is part of the Bo7 chord and will give us our nice sounding I-V-I chord movement. If the scale were to just go from G to A, it would be going from C6 to C6. The reason for this is the I-V-I chord movement that defines the sixth diminished scale. Stripped away of the chords, here are the notes of the scale. The second thing to notice is that the notes of the scale aren’t the same as the notes of the traditional C major scale. Each note/chord on the scale resolves into the next, and so forth. What we’re essentially doing is turning a scale into a I-V-I-V-I… progression. Let’s examine the Bo7 of the C major sixth diminished scale.īo7 can be renamed as Abo7, which is a substitute chord for G7, which is the dominant chord of CMaj7.
Therein lies the essence of the Barry Harris sixth diminished scale. Diminished chords are substitutes for dominant chords. If you read my article about diminished chords, you’ll be aware of the relationship between diminished chords and dominant chords. This is what gives the Barry Harris sixth diminished scale its characteristic sound. The first is that going up the scale, you’re alternating between a diminished chord and a major chord, in this case C6 and Bo7. Here is the C major sixth diminished scale. The Barry Harris sixth diminished scale is a system for attaching chords to each note of a major or minor scale. The concept that it’s built on-resolving diminished chords-is very prevalent in both jazz and classical playing. You’ll find it extremely useful and a great addition to your repertoire. The Barry Harris sixth diminished scale is a useful system for harmonizing major and minor scales.
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