Electric Bass: Ab Dorian Over the Changes
Where Ab Dorian lies at this seat, and what a chorus takes out of it.
Ab Dorian runs 7 notes to the octave, laid out here on EADG with every Ab flagged. Mid-chorus the pattern is not what you need; where the root is when the chord changes underneath you is.
Minor with a raised 6th (natural 6) — soulful, smooth, and less dark than natural minor. The quintessential jazz-minor and blues mode.
Heard in: "So What" (Miles Davis), "Oye Como Va" (Santana), "Eleanor Rigby" (Beatles) — rock, blues, funk, jazz.
The electric bass can hold a note long enough for it to be heard as a choice rather than a step, so a scale here is read for its strong tones first and its passing tones second.
Play it slowly against the audio until it stops being a shape, then put it over two bars of a form and let the chord tones decide which of the notes you actually keep.