Piano chord

B Major 9th Chord

Bmaj9 is a major 9th chord built on B. It contains the notes B – D♯ – F♯ – A♯ – C♯.

Bmaj9

Also written: BM9, BΔ9

B

D♯

F♯

A♯

C♯

Notes in Bmaj9

Count up from B using the intervals below. The formula shows each note relative to the B major scale.

Notes	Intervals	Formula	Semitones
B	Root	1	0
D♯	Major 3rd	3	4
F♯	Perfect 5th	5	7
A♯	Major 7th	7	11
C♯	Major 9th	9	14

Split it between the hands: left hand plays B (and the 7th if there is one), right hand plays the 3rd, 5th and 9th.
Dropping the 5th is fine — it adds little colour and frees a finger.
Keep the 9th on top for the smoothest sound.

A major 7th chord with the 9th added — even softer and more open than maj7. Pianists use it for lush intros, ballads and neo-soul voicings.

Sound: Lush & warm

Bmaj9 is built only from notes of these keys. The Roman numeral shows its role in each key.

Hear Bmaj9 with different sounds and compare it with other chords in the interactive builder.

If chords sound sour even when you play the right notes, the piano is probably out of tune. Our technicians tune pianos across Israel.