This is useful for reference when working out key centres. The tutorial on triad construction is also useful background reading.
There are also reference charts of parent keys for minor and diminished triads.
| Triad | Notes | Major Keys | Minor Keys |
|---|---|---|---|
| C | C E G | I of C major IV of G major V of F major |
III of A minor VI of E minor VII of D minor |
| G | G B D | I of G major IV of D major V of C major |
III of E minor VI of B minor VII of A minor |
| D | D F# A | I of D major IV of A major V of G major |
III of B minor VI of F# minor VII of E minor |
| A | A C# E | I of A major IV of E major V of D major |
III of F# minor VI of C# minor VII of B minor |
| E | E G# B | I of E major IV of B major V of A major |
III of C# minor VI of G# minor VII of F# minor |
| B | B D# F# | I of B major IV of F# major V of E major |
III of G# minor VI of D# minor VII of C# minor |
| F# | F# A# C# | I of F# major V of B major |
III of D# minor VII of G# minor |
| Gb | Gb Bb Db | I of Gb major IV of Db major |
III of Eb minor VI of Bb minor |
| Db | Db F Ab | I of Db major IV of Ab major V of Gb major |
III of Bb minor VI of F minor VII of Eb minor |
| Ab | Ab C Eb | I of Ab major IV of Eb major V of Db major |
III of F minor VI of C minor VII of Bb minor |
| Eb | Eb G Bb | I of Eb major IV of Bb major V of Ab major |
III of C minor VI of G minor VII of F minor |
| Bb | Bb D F | I of Bb major IV of F major V of Eb major |
III of G minor VI of D minor VII of C minor |
| F | F A C | I of F major IV of C major V of Bb major |
III of D minor VI of A minor VII of G minor |
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