It is a common pitfall for students of chord-scale equivalency theories to give every note within a chord-scale equal treatment. There is a tonal hierarchy that must be recognized. The core triad needs to be thought of as the lower structure, the seventh as what I call the “gateway” tone, and the other chord-tones as “upper-structures” or “extensions”. Every note besides the core triad may be treated as a “tendency tone” (meaning a tone that is unstable and naturally tends to resolve either upward or downward to a more stable tone) depending on the immediate context. “Avoid” notes or “handle with care" notes are the most unstable tones within each chord-scale. Tonal hierarchies within each chord-scale can fluctuate depending on the harmonic conditions of the music at hand. Use your ear to determine the level of complexity that is appropriate.
Jonathan Pac Cantin “JonnyPac” (born 1981) began learning guitar and music theory at the age of 15. By studying jazz theory books, listening to a steady diet of harmonically sophisticated music, and picking the brains of accomplished local and online musicians he began to piece together a comprehensive model of chord-scale theory. Currently, he composes, arranges, and improvises music with his modal jazz combo "Moondrool", and as a soloist. He is also a director of a modern art gallery, visual artist, photographer, naturalist, European board game enthusiast, and collector of 80’s Battle Beasts action-figures.
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