A 13th chord is an extended chord that adds the 13th scale degree (which is the 6th, an octave higher) to a 7th chord. On paper, it looks complex: 1-3-5-7-9-11-13. But on guitar, you’ll play a simplified version that captures the essential color without overwhelming your fingers.
The reason to learn 13th chords: they add sophistication and color to progressions without the harshness of simpler extensions. A Cmaj13 sounds dreamy and jazzy. A C13 (dominant) sounds bluesy and soulful. Once you can voice these chords, they become tools in every musical situation—jazz standards, R&B, fusion, neo-soul.
The good news: you don’t need to play all seven notes. You’ll omit some and keep only the essential ones. This selective voicing is what separates jazz professionals from textbook theory.
Major 13th Chords: Formula and Construction
A major 13th chord (Cmaj13) is built on a major 7th foundation: 1-3-5-7, then adds 9 and 13. The full formula is 1-3-5-7-9-(11)-13.
Here’s the catch: the 11th (which is a perfect fourth above the root) clashes with the major 3rd. So you always omit the 11th. That leaves: 1-3-5-7-9-13. That’s still six notes, and on guitar, you can’t play all six cleanly. So you simplify further.
In practice, you’ll play something like: 3-7-9-13 or 3-7-13 (omitting the root and 5th for a lighter sound). Why? The 3rd tells listeners it’s major, not minor. The 7th establishes the chord family. The 13th is the color note, the highest extension that makes the chord sound lush.
A Cmaj13 voicing: E–B–D–A (the 3rd, 7th, 9th, 13th). Play that shape and you’ve got the essence of Cmaj13 without the mud. Notice the root (C) is omitted intentionally.
Dominant 13th Chords: The Workhorse
A dominant 13th (C13) is the 7th chord’s ambitious cousin. Formula: 1-3-5-b7-9-(11)-13. Again, omit the 11th due to clash.
Dominant 13th chords are more common than major 13ths in everyday music. They appear in blues (that soulful quality), R&B, funk, and jazz standards. A C13 (C–E–G–B♭–D–A) has a bluesy, soulful, slightly unresolved quality. It wants to move somewhere—usually to F or another I chord.
The practical voicing: 1-3-b7-13 or 1-3-b7-9-13 (add the 9th for more color). Play this on a barre chord shape and you’ve got a sound that’s immediately sophisticated.
Important Notes: What to Keep, What to Omit
Here’s the hierarchy for 13th chords:
Must keep: the 3rd (major or minor), the 7th (major, minor, or flatted), and the 13th (highest extension).
Can add: the 9th (adds brightness and color).
Can omit: the 5th (often sounds empty anyway), the 11th (always causes clash), the root (especially in jazz—rootless voicings sound cleaner).
The reason: in a 13th chord, the 13th is doing the heavy lifting. It’s the reason you’re using the chord instead of a simpler 7th or 9th. If you can hear that 13th clearly, you’ve got the chord.
A professional jazz voicing often ignores traditional rules and focuses on ear. If it sounds good and the 13th is present, you’re golden. No need to play every note textbook says should be there.
How to Voice a 13th Chord on Guitar
The most practical Cmaj13 shape uses a barre. Place your index finger on fret 7 (or whatever fret you want), covering strings 1–5. This gives you E–B–E–G#–C (using the high E and B strings). The shape is movable—shift it up or down the fretboard and you’ve got Dmaj13, Emaj13, Fmaj13, etc.
Why movable shapes matter: once you know one shape, you know them all. You don’t have to memorize a dozen different voicings. You transpose the shape.
To practice: play the shape slowly. Pick each note individually to make sure every string rings clearly. Then strum them together. Does it sound lush? Does the 13th ring out? Good.
Alternative voicing: use rootless shapes for a lighter, more transparent sound. Position your fingers so the chord sits high on the neck, using the open high strings. This approach is common in jazz comping (rhythm guitar behind a soloist). It keeps the texture open and lets the horns or vocals shine through.
Rootless Voicings in Jazz
The rootless voicing is where 13th chords shine in jazz. A rootless Cmaj13 voicing typically goes: 3-7-9-13 (or even just 3-7-13 if the 9th feels too full).
Why omit the root? In a band setting, the bass player plays the root. Your job on guitar is to fill the harmonic space, not double what the bass is doing. Omitting the root makes room for bass movement and creates a cleaner, less muddy sound.
A rootless Cmaj13: E–B–D–A (played somewhere on the fretboard). This voicing appears constantly in jazz comping. It’s professional, sophisticated, and leaves space for everything else in the arrangement.
Practice these voicings by listening to jazz recordings. Notice how the guitar doesn’t clash with the bass or fill every frequency. There’s space, clarity, and sophistication. That’s the rootless voicing at work.
Practical Examples and Uses
Cmaj13 appears often at the end of ii–V–I progressions. Dm7–G7–Cmaj13 is a classic jazz turn-around. The Cmaj13 lands with sophistication and finality.
It also functions as a substitution. Anywhere you’d play Cmaj7 or Cmaj9, you can upgrade to Cmaj13 for added color without changing the basic harmony.
In R&B and neo-soul, Cmaj13 chords create dreaminess. Think of late-night, smooth R&B production—these chords are everywhere, adding that lush, sophisticated vibe.
Use the chord finder tool to identify 13th chords in songs you love, then reverse-engineer the voicing. How did the composer voice it? Why that shape? Learning by ear accelerates your understanding faster than any textbook.
When and Where to Use 13th Chords
Use 13th chords when you want sophistication without harshness. They’re perfect for:
- Jazz standards and jazz comping
- R&B and neo-soul ballads
- Fusion and contemporary jazz
- Final chords of progressions (strong, complete resolution)
- Substitutions for simpler 7th or 9th chords
Don’t force them. If a song calls for a Cmaj7, a Cmaj13 isn’t always better—sometimes simpler is stronger. Taste and context matter.
Start by learning one voicing deeply, then transpose it to other keys. Use rootless versions in band settings, full voicings in solo guitar. Listen to how professionals use them, then experiment on your own guitar.
Frequently Asked Questions
What’s the difference between Cmaj13 and Cmaj9?
Cmaj9 is 1-3-5-7-9. Cmaj13 adds the 13th, so it’s 1-3-5-7-9-(11)-13. The 13th (that high 6th) gives Cmaj13 a different color—more open, more sophisticated, slightly more complex. If a chord chart says Cmaj13, use the 13th.
Can I play a 13th chord in the key center?
Absolutely. A Cmaj13 functions as the I chord in C major. It resolves and feels complete, unlike the V chord (which wants to move). You can end a song on Cmaj13. That’s how strong it is.
Do I really have to omit the 11th?
Yes. The 11th (a perfect fourth above the root) clashes with the major 3rd, creating dissonance that sounds wrong, not intentional. Leave it out.
How do I know if I’m playing the right voicing?
Simple: can you hear the 13th clearly? If yes, you’re likely right. If the chord sounds muddy or you can’t distinguish the 13th from other notes, try a higher position on the fretboard or a different voicing.
Are rootless voicings always better than full voicings?
No. In a trio or solo guitar context, a full voicing with root might be better. In a band with bass player, rootless voicings leave room. Use both—choose based on context.
Daniel Murphy is a guitar theory and chord analysis writer at GuitarChordIdentifier. He focuses on chord recognition, guitar harmony, music theory, and interactive learning tools for guitarists, musicians, songwriters, and beginners.