Chord · 9ths

B♭m9 — B♭ Minor 9th

B♭m9 is the B♭ minor 9th chord. It is built on the root B♭ with minor 3rd (D♭), perfect 5th (F), minor 7th (A♭) and major 9th (C) above it — the formula 1 ♭3 5 ♭7 9, sounding the notes B♭ D♭ F A♭ C. On the piano it sits at Bb (octave 3) and above in the library's voicing; the same 5 notes in any octave are still B♭m9.

Root
B♭
Quality
Minor 9th
Formula
1 ♭3 5 ♭7 9
Notes
B♭ D♭ F A♭ C

On the keyboard

B♭m9 on the piano keyboard: B♭ D♭ F A♭ CB♭D♭FA♭C

The notes of B♭m9

DegreeNoteInterval from the rootPitch
1B♭rootB♭3
♭3D♭minor 3rdD♭4
5Fperfect 5thF4
♭7A♭minor 7thA♭4
9Cmajor 9thC5

Other 9ths on B♭

B♭9B♭maj9B♭mMaj9B♭9sus4B♭9♭5B♭9♯5B♭m9♭5

Minor 9th chords on every root

Cm9C♯m9Dm9E♭m9Em9Fm9F♯m9Gm9G♯m9Am9Bm9

Part of the chord reference. See also the scales and the keys.