A phrygian b4 scale
The A phrygian b4 scale consists of the A (Perfect unison), A# (Minor second), C (Minor third), C# (Major third), E (Perfect fifth), F (Minor sixth) and G (Minor seventh) notes.

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