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Chord & Fret

C#add9 — major added ninth

Also written Dbadd9 — the same chord, spelled the other way.

Notes in C#add9: C# – E# – G# – D#Formula: 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 add9 adds the ninth to the major triad without including the seventh. It is one of the best ways to enrich a chord without raising the tension too much.

The same chord on all four instruments

C#add9, x 4 1 1 2 1C#add931121×C#D#G#C#F
Guitar
C#add9, x 4 1 1 2 1C#add931121×C#D#G#C#F
Electric guitar
C#add9, 1 1 2 3C#add91123D#G#C#F
Cavaquinho
C#add9, 1 3 1 4C#add91324G#D#FC#
Ukulele

Where to use it: Pop, country, worship, MPB and romantic sertanejo.

The shapes of C#add9 don't end on this page — the whole neck holds dozens. In Chord & Fret, you check it note by note, playing any shape as an arpeggio; compare positions with their difficulty marked; and change the tuning — the shape rewrites itself. Start free. Unlock everything with Pro. Plays offline.

See the whole neck in Chord & Fret →

Part of the Added-tone family.

Other chords in this family

C#m(add9)

See all chord types and qualities →