theory from Frank Singer.comSecondary and Extended Dominants | print this page | close this window |

Secondary and extended dominants are functional dominant seventh chords. Both resolve one step forward through the cycle of fifths to a target.

Secondary and Extended Dominants
Secondary Dominants
|| I V7/II--> | IIm7 V7/III--> | IIIm7 V7/IV--> | IVmaj7 V7/V--> | V7 V7/VI--> | VIm7 V7/VII--> | V7/3rd V7--> | I ||
|| C   A7 |  Dm7   B7 |  Em7   C7 |  F   D7 |  G   E7 |  Am7   F#7 |  G/B   G7 |  C  ||
Extended Dominants
|| V7--> V7--> | V7--> V7--> | V7--> V7--> | V7/V--> V7--> | I ||
||  G#7   C#7 |  F#7   B7 |  E7   A7 |  D7   G7 |  C  ||

Secondary dominants resolve immediately back into the key of the moment. The chords are described as being a "five-seven (V7)" of the target.The diagonal line in the analysis symbol represents the word of.

Secondary Dominants
Secondary Dominant Example in C Diatonic Target Example in C
V7/II A7 IIm7 Dm7
V7/III B7 IIIm7 or I/3rd Em7 or C/E
V7/IV C7 IVmaj7 Fmaj7
V7/V D7 V7 G7
V7/VI E7 VIm7 Am7
V7/VII F#7 V/3rd G/B

Extended Dominants have another non-diatonic dominant 7th chord as its target.

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