The C♯ m6/9 Chord Explained
C-sharp minor six add nine is a Minor chord family color chord built from the notes C♯, E, G♯, A♯, and D♯. Its root is C♯, and its interval number formula is 1-♭3-5-6-9, which gives you the interval names root, minor third, perfect fifth, major sixth, and major ninth. You may also see it written as C♯m6/9, C♯ min6/9, or C♯ minor 6 add 9. If you are new to chords, the widget above can help you see and hear how these notes fit together, and learning the chord intervals makes the structure much easier to recognize.
C♯ m6/9 Alternate Names
- C♯m6/9
- C♯ min6/9
- C♯ minor 6 add 9
C♯ m6/9 Chord Notes
C♯ m6/9 Chord Formula
C♯ m6/9 Chord Notation
How To Use C♯ m6/9 In Music
Because it is a minor chord with added color tones, C♯m6/9 sounds smooth, jazzy, warm, and slightly thoughtful rather than dark or harsh. The minor triad gives it a gentle sadness, while the 6 and 9 make it feel more open and sophisticated. Its mood can change depending on the surrounding harmony: after brighter chords it can sound reflective, while before stronger resolution chords it can feel tender and expressive. For example, in the key of B major, C♯m6/9 can work as ii in a progression like I–ii–V–I, or in A major it can color a iii–vi–ii–V style movement. Since the root shapes how we hear the whole chord, it also helps to understand the chord root when listening to where this harmony wants to move.
C♯ m6/9 Chord Inversions
Another useful idea is inversion, which means playing the same chord tones but starting from a note other than C♯ in the bass. For C♯m6/9, a first inversion might place E in the bass, another could use G♯, and other voicings might put A♯ or D♯ at the bottom. The chord quality stays the same, but the sound changes: E in the bass can feel softer and more lyrical, while G♯ in the bass can feel steadier and more flowing. Players use inversions to create smoother motion between chords, avoid large jumps, and shape the mood more gently. You may also hear simpler related versions such as C♯m, C♯m6, or C♯madd9, which each keep part of the minor sound while changing the amount of color.
