About the C nine suspended four chord
The C nine suspended four chord is a C ninth suspended fourth built from C, F, G, B flat, D. It sits outside the plain diatonic set, so it is borrowed to add color and tension.
Inversions
(root position)
Notes and intervals
| 1 | C | Root |
| 2 | F | Perfect 4th |
| 3 | G | Perfect 5th |
| 4 | B flat | Minor 7th |
| 5 | D | Major 9th |
Shapes
Chromatic
Circle of Fifths
Other C chords
Simpler triads
Suspended
Sixths and sevenths
C six C minor six C minor flat six C seven C major seven C minor seven C minor seven flat five C diminished seven C minor major seven C major seven flat five C major seven sharp five C minor major seven flat five
Extensions
C nine C add nine C major nine C minor nine C eleven C thirteen C six nine C minor add nine C major eleven C major thirteen C minor eleven C minor thirteen C minor six nine C minor major nine C minor major eleven
Altered
Functional relationships
These chords are where this one most naturally comes from and resolves to inside a key.
Dominant
The dominant is a fifth above the root, and it builds tension that pulls strongly back to this chord.
Subdominant
The subdominant is a fourth above the root (a fifth below), and it usually leads on to the dominant or back home.
Tritone substitution
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.
