Originally Posted By: raymb1
The b9 is there because the composer wanted it there at that particular time and to make sure the improviser plays a b9 instead of a natural 9. Ray


Well, yes that's true, but it does not constitute an explanation of the sound's place in the harmony - maybe there isn't one of course.

In early Jazz - Dixie and similar, the fourth was treated like an avoid note, the seventh was also treated with caution, so you get a pentatonic sound.

Personally, I like to think of all 12 tones in a chromatic heirarchy in a chord from sonority to dissonance - the more dissonant being treated like passing tones. 'Avoid' notes and even avoid chords can sound great - if - resolved, tension and release

Just my opinion.

Z


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