G half diminished scale
The G half diminished scale consists of the G (Perfect unison), A (Major second), Bb (Minor third), C (Perfect fourth), Db (Diminished fifth), Eb (Minor sixth) and F (Minor seventh) notes.

How to play the G half diminished scale
- Find G (Root) on the piano keyboard
- Play A (Major second) — 2 semitones above G
- Play Bb (Minor third) — 3 semitones above G
- Play C (Perfect fourth) — 5 semitones above G
- Play Db (Diminished fifth) — 6 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 half diminished scale