This is useful for reference when working out key centres. The tutorial on 7th chords is also useful background reading.
There are also reference charts of parent keys for major 7th, minor 7th and half diminished chords.
| Chord | Notes | Major Keys | Minor Keys |
|---|---|---|---|
| G7 | G B D F | V of C major | VII of A minor |
| D7 | D F# A C | V of G major | VII of E minor |
| A7 | A C# E G | V of D major | VII of B minor |
| E7 | E G# B D | V of A major | VII of F# minor |
| B7 | B D# F# A | V of E major | VII of C# minor |
| F#7 | F# A# C# E | V of B major | VII of G# minor |
| C#7 | C# E# G# B | V of F# major | VII of D# minor |
| Db7 | Db F Ab Cb | V of Gb major | VII of Eb minor |
| Ab7 | Ab C Eb Gb | V of Db major | VII of Bb minor |
| Eb7 | Eb G Bb Db | V of Ab major | VII of F minor |
| Bb7 | Bb D F Ab | V of Eb major | VII of C minor |
| F7 | F A C Eb | V of Bb major | VII of G minor |
| C7 | C E G Bb | V of F major | VII of D minor |
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