C#6/9 Chord

What is the C#6/9 Chord?

Here's a fretboard view of the C#6/9 chord so you can see where each chord tone lives across the neck. This chord is enharmonically equivalent to Db6/9.

Notes and Arpeggios

The 6/9 chord stacks a major 6th and a 9th on a major triad, producing a warm, complete sound that feels settled but colorful. It's a classic jazz voicing often used as a final chord or a substitute for plain major. The chord tones are: C#, E#, G#, A#, D#. It's built from degrees 1, 3, 5, 6, and 9.

How to Use It

Extended voicings are a staple of jazz, neo-soul, and modern pop harmony. On guitar, start with the chord-box voicings, then find at least two different string sets where the same chord tones appear.

Practice switching between this chord and its most common neighbors in a progression. Use the highlights to spot where the same tone repeats across strings.