G phrygian b4 scale
The G phrygian b4 scale consists of the G (Perfect unison), Ab (Minor second), Bb (Minor third), Cb (Major third), D (Perfect fifth), Eb (Minor sixth) and F (Minor seventh) notes.

How to play the G phrygian b4 scale
- Find G (Root) on the piano keyboard
- Play Ab (Minor second) — 1 semitone above G
- Play Bb (Minor third) — 3 semitones above G
- Play Cb (Major third) — 4 semitones above G
- Play D (Perfect fifth) — 7 semitones above G
- Play Eb (Minor sixth) — 8 semitones above G
- Play F (Minor seventh) — 10 semitones above G
- Play all 7 notes in ascending order to perform the G phrygian b4 scale