Minor ii–V–i
in A minor
Piano chord
B Half-Diminished 7th Piano Chord (Bm7♭5)
The B Half-Diminished 7th chord on piano is made of the notes B, D, F and A. Bittersweet tension. Used as the ii chord in minor keys.
Tap any key to hear it.
What notes are in B Half-Diminished 7th?
4 notes, built 1 – ♭3 – ♭5 – ♭7 up from B.
- Notes
- B – D – F – A
- Formula
- 1 – ♭3 – ♭5 – ♭7
- Semitones from the root
- 0 – 3 – 6 – 10
- Symbol
- Bm7♭5
- Chord type
- Half-Diminished 7th, 4 notes
How to play B Half-Diminished 7th on piano
- Right hand: B (1), D (2), F (3), A (5). Fingers 1 – 2 – 3 – 5, thumb on B.
- Left hand: B (5), D (3), F (2), A (1). Fingers 5 – 3 – 2 – 1, little finger on B.
Fingers are numbered 1 (thumb) to 5 (little finger) on both hands.
B Half-Diminished 7th inversions
Each inversion puts a different note of the chord in the bass. Written as a slash chord: Bm7♭5/D, Bm7♭5/F, Bm7♭5/A.
Can you find B Half-Diminished 7th?
Tap the notes on the keyboard, then check. Six chords, starting with this one.
1 / 6 Tap the notes of B Half-Diminished 7th (Bm7♭5)
Score 0
Any octave, any order. Each key you tap plays.
What key is B Half-Diminished 7th in?
The keys whose scale contains every note of Bm7♭5, with the chord’s Roman numeral in each.
Major keys
- C majorviiø7
Minor keys
- A minoriiø7
B Half-Diminished 7th chord FAQ
What notes are in the B Half-Diminished 7th chord?
B Half-Diminished 7th (Bm7♭5) has 4 notes: B, D, F and A. Its formula is 1 – ♭3 – ♭5 – ♭7, counted up from B.
How do you play B Half-Diminished 7th on the piano?
Put your right thumb on B and play B, D, F and A with fingers 1 – 2 – 3 – 5. With the left hand, use fingers 5 – 3 – 2 – 1, little finger on B.
What are the inversions of B Half-Diminished 7th?
1st inversion: D, F, A, B (Bm7♭5/D). 2nd inversion: F, A, B, D (Bm7♭5/F). 3rd inversion: A, B, D, F (Bm7♭5/A).
What key is B Half-Diminished 7th in?
Bm7♭5 belongs to C major (viiø7) and A minor (iiø7).