The minor 9th extends a minor 7th with the 9th (1–♭3–5–♭7–9). Silky and sophisticated, it is a cornerstone of soul, jazz, and neo-soul.
NotesE · F♯ · G · B · D
Formula1 · 9 · ♭3 · 5 · ♭7
Every minor 9th chord tone across the neck. Solo with these and you spell the chord — that's the difference between running a scale and playing the changes.