Chord
B 9 Chord
Interactive keyboard
Highlighted notes form this chord.
Notes
B · D♯ · F♯ · A · C♯
Root: B
Intervals
1 · 3 · 5 · ♭7 · 9
How it is built
This chord starts on B and applies the intervals 1, 3, 5, ♭7, 9. The result contains 5 distinct pitch classes per octave.
Explore related combinations
Guide and musical context
About B 9 Chord
B 9 Chord contains B, D♯, F♯, A, C♯. Its sound is rich and tense, extending the dominant with a ninth.
Character and sound
Rich and tense, extending the dominant with a ninth.
Musical context and history
The dominant ninth extends a 7 chord while keeping its dominant tension. It is classic vocabulary in jazz, blues, funk, soul and R&B.
How and where it is used
It may resolve as a dominant or act as a stable vamp in groove-based styles.
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 B, a common functional resolution moves toward E. Alterations and extensions change the color while preserving that tension-and-resolution reference.
The formula on this page is 1 · 3 · 5 · ♭7 · 9 and, from B, produces the notes B · D♯ · F♯ · A · C♯.
Frequently asked questions
What notes are in the B 9 Chord?
The notes are B, D♯, F♯, A, C♯.
What is its interval formula?
The formula is 1 · 3 · 5 · ♭7 · 9.
How does it sound and what is it used for?
Rich and tense, extending the dominant with a ninth. It may resolve as a dominant or act as a stable vamp in groove-based styles.
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.