A dorian b9 scale
The A dorian b9 scale consists of the A (Perfect unison), A# (Minor second), C (Minor third), D (Perfect fourth), D# (Diminished fifth), F# (Major sixth) and G (Minor seventh) notes.

Notes in order
- A — Perfect unison
- A# — Minor second
- C — Minor third
- D — Perfect fourth
- D# — Diminished fifth
- F# — Major sixth
- G — Minor seventh