C altered scale
The C altered scale consists of the C (Perfect unison), Db (Minor second), Eb (Minor third), Fb (Major third), Gb (Diminished fifth), Ab (Minor sixth) and B (Major seventh) notes.

How to play the C altered scale
- Find C (Root) on the piano keyboard
- Play Db (Minor second) — 1 semitone above C
- Play Eb (Minor third) — 3 semitones above C
- Play Fb (Major third) — 4 semitones above C
- Play Gb (Diminished fifth) — 6 semitones above C
- Play Ab (Minor sixth) — 8 semitones above C
- Play B (Major seventh) — 11 semitones above C
- Play all 7 notes in ascending order to perform the C altered scale