B9
Extended · B root
B9
A dominant 7th with an added 9th. Funky and full of energy.
0 st4 st7 st10 st14 st
Notes in B9
BRoot
D#3rd
F#5th
A7th
C#9th
B is less common as a home key but appears often as the III or VII chord in various progressions.
Identify the Chord Quality on B
Each chord below is played on B. Listen and identify whether you heard B9, Bm, B7, or another quality — the hardest and most useful ear training skill.
Dominant 9th in All 12 Keys
Other Chords in B
Related Extended
About the B9 Chord
The B9 chord is a dominant 9th chord built on B. It contains the notes B, D#, F#, A, C# — the root, third, fifth, seventh, and extensions.
A dominant 7th with an added 9th. Funky and full of energy. Practising the B9 chord across different voicings and contexts builds the harmonic recognition that lets you identify it instantly in any musical setting — whether in a band mix, a recording, or a live performance.