How to play C♯7(add13)/A♯ chord on guitar
Shape 646464
Shape characteristics
Closed voicing
Every sounding string is fretted, with no open strings. Tight, controllable tone that responds well to palm muting and dynamic picking.
Mid-neck · fret 4-6
Balanced tone, with neither the ringing openness of first position nor the bright snap of the upper register. Common choice for rhythm work when you want a fuller, more compact sound.
Full six-string voicing
All six strings ring, giving you the biggest, most resonant version of this chord, ideal for strumming and solo acoustic contexts.
Bass: A♯ · Top: G♯
An extended chord tone is in the bass, giving the voicing a distinctive colour beyond the standard inversions.
Compared to Shape 643304 , this voicing uses a partial barre and sits lower on the neck (starting at fret 3).
How to play this shape
- 1 Place the 1st finger on the 4th fret of the 1st string, 3rd string, and 5th string in barre position
- 2 Place the 2nd finger on the 6th fret of the 6th string
- 3 Place the 3rd finger on the 6th fret of the 4th string
- 4 Place the 4th finger on the 6th fret of the 2nd string
Frequently Asked Questions
What does "646464" mean?
The sequence 646464 is a highly compact guitar chord notation. It represents the fret played on each of the 6 strings, reading left-to-right from the thickest (lowest pitch) string to the thinnest (highest pitch) string: E, A, D, G, B, e.
- x means the string is muted or skipped entirely.
- 0 means the string is played "open" (without pressing over a fret).
- 1-9 represent standard fret numbers 1 to 9.
- a, b, c... represent frets 10, 11, 12, and higher (where a=10, b=11, c=12).
Can I play this C♯7(add13)/A♯ shape anywhere else?
Yes! This specific layout is just one way to voice a C♯7(add13)/A♯ chord. You can find all other variations in our chord shape library for C♯7(add13)/A♯. Most guitarists choose different shapes based on whether they want a "brighter" or "deeper" sound, or which chord they are transitioning from.
Other shapes
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