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Chord & Fret

A/B — with the ninth in the bass

Notes in A/B: B – A – C# – EFormula: 1 – 3 – 5 / 9

In the formula, the numbers count steps of the major scale starting from the note that names the chord; "b" lowers a half step, "#" raises one — and a slash names the bass note.

The C triad over a D bass. Heard from the bottom up it is a suspended chord — a D with a fourth and a seventh, no third: open, and saying nothing about major or minor.

The same chord on all four instruments

A/B, x 2 2 2 2 0A/B1111×BEAC#E
Guitar
A/B, x 2 2 2 2 0A/B1111×BEAC#E
Electric guitar
A/B, 9 9 10 11A/B91123BEAC#
Cavaquinho
A/B, 9 11 9 12A/B91324EBC#A
Ukulele

Where to use it: Right before the resolving chord, in gospel, pop and keyboard fills.

The shapes of A/B don't end on this page — the whole neck holds dozens. In Chord & Fret, you hear every shape strummed string by string, in each instrument's own voice; open every variation on the neck, grouped by bass note; and set a capo — the diagrams redraw above it. Start free. Unlock everything with Pro. Plays offline.

See the whole neck in Chord & Fret →

Part of the Inversions (slash) family.

Other chords in this family

A/C#A/EA/G#A/DA/F#

See all chord types and qualities →