A tritone scale
The A tritone scale consists of the A (Perfect unison), A# (Minor second), C# (Major third), D# (Diminished fifth), E (Perfect fifth) and G (Minor seventh) notes.

How to play the A tritone scale
- Find A (Root) on the piano keyboard
- Play A# (Minor second) — 1 semitone above A
- Play C# (Major third) — 4 semitones above A
- Play D# (Diminished fifth) — 6 semitones above A
- Play E (Perfect fifth) — 7 semitones above A
- Play G (Minor seventh) — 10 semitones above A
- Play all 6 notes in ascending order to perform the A tritone scale