Secondary and Extended Dominants

Secondary and Extended Dominants

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^--> \| IV^maj7 V⁷/_V^--> \| V⁷ V⁷/_VI^--> \| VIm⁷ V⁷/_VII^--> \| V⁷/_3rd V^7--> \| I \|\| \|\| C A⁷ \| Dm⁷ B⁷ \| Em⁷ C⁷ \| F D⁷ \| G E⁷ \| Am⁷ F#⁷ \| G/_B G⁷ \| C \|\|
Extended Dominants
\|\| V^7--> V^7--> \| V^7--> V^7--> \| V^7--> V^7--> \| V⁷/_V^--> V^7--> \| 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	IV^maj7	F^maj7
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.