Is a secondary dominant always a seventh chord?

No, secondary dominants aren't required to be seventh chords. They can be plain triads (e.g. V/vi). They also aren't required to be major or have a major triad--I've heard plenty of vii°7/V chords, and those are diminished 7th chords.

1. Does a secondary dominant have to be a seventh chord?
2. What chords can be secondary dominant?
3. What is a secondary dominant seventh chord?
4. What is a secondary dominant note?

Does a secondary dominant have to be a seventh chord?

A shorter notation, used below, is "V/ii", "V/iii", etc. Like most chords, secondary dominants may be seventh chords or chords with other upper extensions. Dominant seventh chords are commonly used as secondary dominants.

What chords can be secondary dominant?

A secondary dominant is any chord that has the dominant function over another chord that is not the tonic of the song. For example, in the key of C major, the dominant chord is G7.

What is a secondary dominant seventh chord?

A Secondary Dominant is a Dominant 7th chord that is the dominant of a diatonic chord other than the tonic. ... So in the key of C the Target Chord of a G is C. Since a Secondary Dominant is the dominant of a chord other than the tonic, it is the dominant (V chord) from the Target Chord's key.

What is a secondary dominant note?

DEFINITION: A secondary dominant is an altered chord having a dominant or leading tone relationship to a chord in the key other than the tonic. An altered chord is a chord containing at least one tone that is foreign to the key.