E Dorian, Mapped for the Bass
Where E Dorian lies on this seat's fretboard, and how a blues phrase leans on it.
E Dorian runs 7 notes to the octave, laid across this seat's EADG fretboard with every E marked. A blues phrase is short and keeps coming home to one pitch; the marked notes are where it comes home to.
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.
On the bass a scale supplies the notes between one chord and the next — the steps a line takes on its way to the change — far more often than it is played as a run.
Whatever scale you start from, the blues bends it: the third and the seventh get pushed flat, or somewhere between flat and natural, and that pull against the chord underneath is most of what the idiom sounds like.