G altered scale
The G altered scale consists of the G (Perfect unison), Ab (Minor second), Bb (Minor third), Cb (Major third), Db (Diminished fifth), Eb (Minor sixth) and F# (Major seventh) notes.

How to play the G altered 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 Db (Diminished fifth) — 6 semitones above G
- Play Eb (Minor sixth) — 8 semitones above G
- Play F# (Major seventh) — 11 semitones above G
- Play all 7 notes in ascending order to perform the G altered scale