Harris developed exercises where the student practices these triads in all 12 keys. The goal is to stop thinking "I am playing a D Major scale" and start hearing the intervallic relationship (the 9, #11, 13) against the drone of the root.
In his text, Harris maps out how specific intervals relate to dominant, major, and minor sonorities. He essentially "patches" over the dense harmonic grid with a system of tetrachords (four-note groupings) and intervallic permutations. For example, by treating a dominant seventh chord not as a static entity requiring a Mixolydian scale, but as a sound that can be accessed through various intervallic combinations (often utilizing the tritone or the interval of a major seventh), the improviser gains a vastly wider palette of colors. eddie harris intervallistic concept pdf patched
It forces your brain away from standard scales. He essentially "patches" over the dense harmonic grid
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They called her work a “patched Intervallistic PDF realized,” a clumsy headline that made Eddie smile when he heard about it. He began to attend shows quietly, leaning against the back wall, watching how the younger generation translated his margin notes into wires and light. He watched as players in clubs began to leave deliberate blank measures—five beats of nothing—that, when patched through Mara’s rig, bloomed into harmonics and ghost-tones that sounded like memory and prophecy at once.
The method is structured across three volumes, often consolidated into a single 321-page edition: Volume I: Foundational Intervals