Chord Colors

A sharp nine suspended four chord

About the A sharp nine suspended four chord

The A sharp nine suspended four chord is a A sharp ninth suspended fourth built from A sharp, D sharp, E sharp, G sharp, B sharp. It sits outside the plain diatonic set, so it is borrowed to add color and tension.

It is also written B flat nine suspended four , which spells the same notes enharmonically.

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Inversions

4fr 4fr

(root position)

Notes and intervals

1 A sharp Root
2 D sharp Perfect 4th
3 E sharp Perfect 5th
4 G sharp Minor 7th
5 B sharp Major 9th

Shapes

Chromatic

C C♯ D♭ D D♯ E♭ E F F♯ G♭ G G♯ A♭ A A♯ B♭ B

Circle of Fifths

C G D A E B F♯ G♭ C♯ D♭ G♯ A♭ D♯ E♭ A♯ B♭ F

Other A sharp chords

Simpler triads

A sharp five A sharp A sharp minor A sharp diminished A sharp augmented

Suspended

A sharp suspended two A sharp suspended four A sharp seven suspended four A sharp thirteen suspended four

Sixths and sevenths

A sharp six A sharp minor six A sharp minor flat six A sharp seven A sharp major seven A sharp minor seven A sharp minor seven flat five A sharp diminished seven A sharp minor major seven A sharp major seven flat five A sharp major seven sharp five A sharp minor major seven flat five

Extensions

A sharp nine A sharp add nine A sharp major nine A sharp minor nine A sharp eleven A sharp thirteen A sharp six nine A sharp minor add nine A sharp major eleven A sharp major thirteen A sharp minor eleven A sharp minor thirteen A sharp minor six nine A sharp minor major nine A sharp minor major eleven

Altered

A sharp seven sharp five A sharp seven flat five A sharp seven flat nine A sharp seven sharp nine A sharp nine flat five A sharp nine sharp eleven A sharp nine sharp five

Functional relationships

These chords are where this one most naturally comes from and resolves to inside a key.

Dominant

F Learn more

The dominant is a fifth above the root, and it builds tension that pulls strongly back to this chord.

Subdominant

D sharp Learn more

The subdominant is a fourth above the root (a fifth below), and it usually leads on to the dominant or back home.

Tritone substitution

E nine suspended four Learn more

The tritone substitution is a dominant chord a tritone away that shares the same tension, so it can stand in for this chord and resolve the same way.

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