- ii7Dm7
- V13G13
- Imaj7Cmaj7
G13 is the chord that wants to resolve, so ending the loop on it hands straight back to the top.
The G13 chord is a dominant thirteenth chord built on the root note G. Its notes are G, B, F, A and E.
Dominant thirteenth chords are the fullest dominant sound in common use, a dominant seventh with a ninth and a thirteenth piled on top. The major sixth on top, sounding an octave up as the thirteenth, gives the chord a bright, open lid.

Switch to the interactive diagram to hear the chord, change voicing and swap finger numbers for note names.
To play G13 on piano, place your right hand with your thumb on G, index finger on B, middle finger on E, ring finger on F and little finger on A. Press the keys together and listen for an even sound. On the keyboard every note of G13 is a white key. Practice moving in and out of the chord slowly, then bring in a metronome.

Switch to the interactive diagram to hear the chord, change voicing and swap finger numbers for note names.
On guitar, G13 is commonly played with the voicing shown above. Strings 5, 3, 2 and 1 ring open.
G · B · F · A · E
Play G13 on the online piano
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| Degree | Interval | Semitones | Note | Hear |
|---|---|---|---|---|
| 1 | Root | 0 | G | |
| 3 | Major third | 4 | B | |
| ♭7 | Minor seventh | 10 | F | |
| 9 | Major ninth | 14 | A | |
| 13 | Major thirteenth | 21 | E |
The G13 chord is built from a root, a major third, a minor seventh, a major ninth and a major thirteenth. Start at the root G and stack the intervals to get the whole chord: G, B, F, A and E. The same formula gives you the chord in any other key.
Dominant thirteenth chords are the default rich dominant in jazz, gospel and R&B horn and keyboard voicings, usually the V7 resolving to a major or minor tonic. Big band charts lean on them wherever a plain dominant seventh would sound thin.
G13 tops the dominant family, with a thirteenth over G7 and G9. The thirteenth is the sixth an octave higher, and that is the line between it and G6: G13 also has the minor seventh, so it keeps the dominant pull. The fifth and the eleventh are left out so the voicing doesn't get muddy.
A dominant chord wants to resolve. Its home is the V of a major key - and the I of a blues, where the pull never lets up.
G13 is the chord that wants to resolve, so ending the loop on it hands straight back to the top.
The twelve-bar shape boiled down. The tonic is itself a dominant seventh, which is what makes it a blues.
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