Bb Minor 7 Flat 5 Piano Chord
The Bb Minor 7 Flat 5 chord contains the notes Bb, Db, Fb, Ab, built from the intervals 1 – b3 – b5 – b7.
Chord formula
1 – b3 – b5 – b7
Active voicing: Bb – Db – Fb – Ab
Default voicing. Notes Bb, Db, Fb, Ab.A# m7b5
- Notes
- Bb, Db, Fb, Ab
- Intervals
- 1, b3, b5, b7
- Also known as
- A#m7b5, A#ø7, A# half-diminished
Chord inversions
- CDFbFGABCDFbFGABBbDbAb
- CDFbFGABCDFbFGABDbAbBb
- CDFbFGABCDFbFGABAbBb
- CDFbFGABCDFbFGABAbBb
Practice Chords in Bb
Related chords
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How it is built
Bb minor 7 flat 5 (half-diminished) stacks a minor third, a diminished fifth, and a minor seventh above the root — essentially a minor seventh chord with the fifth lowered a half step.
Common musical function
This chord is best known as the ii chord in minor-key ii–V–i progressions, common throughout jazz standards, where it leads naturally into a dominant seventh and then home to the tonic minor.
Beginner practice advice
Practice Bb in root position until the shape feels automatic, then work through the first, second, and third inversions. Use the audio button to check your voicing, and drill short changes to neighboring chords in the same key.
Moving into and out of the chord
Look for shared notes with nearby chords in the key — keeping a finger on a common tone makes changes smoother. Bb diminished 7 and Bb Minor are good starting points for short practice loops — see the full related chords list below for more.
FAQ
- What notes are in a Bb Minor 7 Flat 5 chord?
- A Bb Minor 7 Flat 5 piano chord uses the notes Bb, Db, Fb, Ab.
- How do I practice Bb on piano?
- Start in root position, then work through the inversions, listen with the audio button, and practice short changes to related chords in the same key.
- Can I explore Bb in every key?
- Yes. Open the Interactive Chord Explorer to transpose this chord quality across all twelve roots, or use Practice Mode to drill changes in time.
Ready to practice Bb Minor 7 Flat 5 Piano Chord?
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