Most traditional jazz methods teach improvisation through the lens of specific scales or modes assigned to specific chords (e.g., playing the Dorian mode over a minor seventh chord). While functional, this approach often leads to "scalar" improvisation—players simply running up and down a scale, sounding more like an exercise than a melody.
Instead, his method focuses entirely on . By practicing scales in wide, shifting intervals, you train your ears and fingers to move unpredictably across the harmony. Key Concepts Inside the Book Barry Finnerty Serious Jazz Practice Book Pdf