Chord · 6ths & Adds

C♯m(add9) — C♯ Minor Add 9

C♯m(add9) is the C♯ minor add 9 chord. It is built on the root C♯ with minor 3rd (E), perfect 5th (G♯) and major 9th (D♯) above it — the formula 1 ♭3 5 9, sounding the notes C♯ E G♯ D♯. On the piano it sits at C# (octave 4) and above in the library's voicing; the same 4 notes in any octave are still C♯m(add9).

Root
C♯
Quality
Minor Add 9
Formula
1 ♭3 5 9
Notes
C♯ E G♯ D♯

On the keyboard

C♯m(add9) on the piano keyboard: C♯ E G♯ D♯C♯EG♯D♯

The notes of C♯m(add9)

DegreeNoteInterval from the rootPitch
1C♯rootC♯4
♭3Eminor 3rdE4
5G♯perfect 5thG♯4
9D♯major 9thD♯5

Other 6ths & adds on C♯

D♭6C♯m6D♭6/9C♯m6/9D♭add2D♭add4D♭add9D♭add11C♯m(add11)

Minor Add 9 chords on every root

Cm(add9)Dm(add9)E♭m(add9)Em(add9)Fm(add9)F♯m(add9)Gm(add9)G♯m(add9)Am(add9)B♭m(add9)Bm(add9)

Part of the chord reference. See also the scales and the keys.