Chord
A 13 Chord
Interactive keyboard
Highlighted notes form this chord.
Notes
A · C♯ · E · G · B · F♯
Root: A
Intervals
1 · 3 · 5 · ♭7 · 9 · 13
How it is built
This chord starts on A and applies the intervals 1, 3, 5, ♭7, 9, 13. The result contains 6 distinct pitch classes per octave.
Explore related combinations
Guide and musical context
About A 13 Chord
A 13 Chord contains A, C♯, E, G, B, F♯. Its sound is full and colorful with a dominant character.
Character and sound
Full and colorful with a dominant character.
Musical context and history
The thirteenth is an extension of dominant harmony. In practice, reduced voicings usually prioritize the third, seventh and important extensions.
How and where it is used
It is common in jazz, sophisticated blues, funk, gospel and colorful dominant resolutions.
In Theory view you can hear the pitch collection without depending on a specific fingering. Then switch to Piano, Guitar, Ukulele or Mandolin to see how the same notes are physically distributed on each instrument.
Harmonic and musical relationships
As a dominant sonority on A, a common functional resolution moves toward D. Alterations and extensions change the color while preserving that tension-and-resolution reference.
The formula on this page is 1 · 3 · 5 · ♭7 · 9 · 13 and, from A, produces the notes A · C♯ · E · G · B · F♯.
Frequently asked questions
What notes are in the A 13 Chord?
The notes are A, C♯, E, G, B, F♯.
What is its interval formula?
The formula is 1 · 3 · 5 · ♭7 · 9 · 13.
How does it sound and what is it used for?
Full and colorful with a dominant character. It is common in jazz, sophisticated blues, funk, gospel and colorful dominant resolutions.
Can I view it on a specific instrument?
Yes. Use the selector near the top to switch between Piano, Guitar, Ukulele and Mandolin without changing the musical combination you are studying.