A Dorian Bebop, Bass Side

8 notes to the octave, mapped below onto this reader's EADG fretboard, with every A called out. Those markers are the useful part mid-bar: a chart moves under you, and the thing you need is where the root went — not where the pattern started.

Dorian with a chromatic passing tone slipped between the b3 and the 4 — eight notes, so chord tones keep landing on the strong beats in a run of eighth notes. Cool, flowing, and swinging.

Heard in: Bebop and straight-ahead jazz lines over minor seventh chords — Charlie Parker, Dizzy Gillespie, and the Barry Harris approach.

Two numbers side by side leave a gap, and a bass player fills it — the walk from one root to the next is invented on the spot out of these notes, and it is the loudest improvisation on the floor.

Play it slowly against the audio until the shape stops being a shape, then take it to a chart counted in A and let the numbers pick their own notes out of it.