How to Play Piano Chord: B♭ half-diminished 7 flat 9 — root | PianoKitty

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B♭m7♭5♭9

root position

B♭ half-diminished 7 flat 9

root position

Notes

B♭, D♭, E, A♭, B

Parent major scale: A♯

The notes of the A♯ major scale are:

#	Note	Function
1	A♯	root
2	C	second
3	D	third
4	D♯	fourth
5	F	fifth
6	G	sixth
7	A	seventh
8	A♯	octave
9	C	ninth

Major scale pattern

The semitone pattern for a major scale is:

WWHWWWH

where:

W = Whole step (2 semitones)
H = Half step (1 semitone)

half-diminished 7 flat 9 chord pattern

1, ♭3, ♭5, ♭7, ♭9

root	B♭
flat third	D♭
flat fifth	E
flat seventh	A♭
flat ninth	B

Similar chords

B♭ half-diminished 7 with a minor 3rd added on top (3 semitones)
B♭ minor 7 flat 9 with raised fifth

Upper structures

B♭ diminished + B♭ (notes overlap)

Play it as two chords

E major A♯ · G♯

E–G♯–B = ♭5, ♭7, ♭9 · left hand: root + ♭7
C♯ minor A♯ · G♯

C♯–E–G♯ = ♭3, ♭5, ♭7 · left hand: root + ♭7

Practice the half-diminished 7 flat 9 chords Practice all inversions of B♭m7♭5♭9

The keyboard can of every chord — change it any time in Preferences.