Notes in C♯maj9
The C♯maj9 chord contains 5 notes: C♯, F, A♭, C, E♭
Intervals
| Interval | Semitones | Note | Function |
|---|---|---|---|
| R | 0 | C♯ | Root |
| 3 | 4 | F | Major 3rd |
| 5 | 7 | A♭ | Perfect 5th |
| 7 | 11 | C | Major 7th |
| 9 | 2 | E♭ | Major 9th |
About C♯ Major 9th Chords
Major 9th chords combine maj7 with a 9th for a lush, sophisticated sound. They appear frequently in jazz ballads, bossa nova, and contemporary R&B. Steely Dan built entire careers on maj9 voicings.
Compatible Scales & Modes
These scales contain all the notes of C♯maj9 and can be used for soloing, improvising, and writing melodies over this chord.
EXPLORE MODES
Playing C# major ninth on Guitar
The C# major ninth chord, spelled C♯, F, A♭, C, E♭, occupies a specific harmonic role that depends on the musical context. In the key of Db major enharmonically, this chord can function as a primary harmony or as a passing color depending on where it appears in the progression. Understanding which scale degrees produce C#-rooted chords helps you predict chord progressions and improvise melodies that complement the harmony.
On guitar, C# major ninth voicings benefit from fourth-fret barre shapes that provide a bright, cutting tone. The physical shape of this chord on the fretboard determines its tonal character — the same notes arranged in different voicings produce noticeably different sounds due to string gauge, fret position, and overtone content. Experiment with playing C# major ninth in multiple positions to find the voicing that best fits the register and texture of the music you are working on.
C#maj9 extends the major seventh chord with the ninth, producing lush, complex harmony. The combination of major seventh and ninth intervals in C#maj9 creates a spacious, colorful sound frequently used in jazz ballads and R&B chord progressions.
When practicing C# major ninth, use the compatible scales listed above to improvise melodies and riffs. Start by playing the chord, then explore the scale tones one at a time to hear how each note sounds against the harmony. This ear training exercise connects your theoretical knowledge of C#-rooted chords to practical musicianship skills that improve your playing across all genres and styles.