C sharp add nine chord (C#add9) on piano
The C sharp add nine chord (C#add9) on piano has 4 notes: C sharp, E sharp, G sharp, and D sharp (C♯, E♯, G♯, D♯). On the keyboard below, the root (C sharp) has the strongest color; each key shows the note name and the degree.
- Notes
- C♯E♯G♯D♯
- Formula
- 1359
How to play C#add9 on piano
Root position · From low to high: C♯ E♯ G♯ D♯
The small dot marks middle C (C4). Tap a key to hear the note.
C#add9 chord inversions
Inverting a chord means putting another of its notes in the bass (the lowest key) without changing the notes. Inversions shorten the way your hand travels from one chord to the next and slightly change the color of the sound.
-
1st inversion (C#add9/E#)
C#add9/E#: E sharp (3) in the bass
From low to high: E♯ G♯ C♯ D♯
-
2nd inversion (C#add9/G#)
C#add9/G#: G sharp (5) in the bass
From low to high: G♯ C♯ D♯ E♯
Notes and intervals of C#add9
C#add9 (C sharp add nine) is built from 4 notes. Each one fills a degree of the chord:
- C♯ · 1 · root
- E♯ · 3 · major third
- G♯ · 5 · perfect fifth
- D♯ · 9 · ninth
About the add nine chord
A major chord with an added ninth and no seventh: extra shine and an emotional touch without losing stability. Very common in pop, country and worship music; in Brazilian charts it also appears as C(9) or C2.
Other C sharp chords
- C#
- C#m
- C#7
- C#7M
- C#m7
- C#m7(b5)
- C#°
- C#°7
- C#+
- C#sus2
- C#sus4
- C#7sus4
- C#5
- C#add9
- C#6
- C#m6
- C#9
- C#m(add9)
- C#m9
- C#7M(9)
- C#m(7M)
- C#7M(#5)
- C#7(b9)
- C#6(9)
- C#m6(9)
- C#11
- C#m11
- C#13
- C#m13
- C#7(#9)
- C#7(#11)
- C#7(b13)
- C#7(#5)
- C#7M(#11)
- C#9sus4
Add nine: other roots
Frequently asked questions
What are the notes of the C#add9 chord on piano?
C#add9 (C sharp add nine) has the notes C♯, E♯, G♯, D♯. The formula is 1 · 3 · 5 · 9: root, major third, perfect fifth, ninth.
How do you play C#add9 on piano?
Find the C sharp key and add the other notes above it: C♯, E♯, G♯, D♯. Play them all together.
What are the inversions of C#add9?
1st inversion (C#add9/E#): E♯ G♯ C♯ D♯; 2nd inversion (C#add9/G#): G♯ C♯ D♯ E♯.
What does C#add9 mean?
C#add9 is the chord symbol for C sharp add nine. A major chord with an added ninth and no seventh: extra shine and an emotional touch without losing stability. Very common in pop, country and worship music; in Brazilian charts it also appears as C(9) or C2.
Is the C#add9 chord the same on piano and keyboard?
Yes. The notes and inversions are the same on any keyboard instrument: acoustic piano, digital piano, keyboard, organ or synthesizer.