Passing diminished
in B♭ major
Piano chord
B Diminished 7th Piano Chord (Bdim7)
The B Diminished 7th chord on piano is made of the notes B, D, F and A♭. Highly tense and symmetrical. Every note is 3 semitones apart.
Tap any key to hear it.
What notes are in B 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 – 9
- Symbol
- Bdim7
- Chord type
- Diminished 7th, 4 notes
How to play B 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 Diminished 7th inversions
Each inversion puts a different note of the chord in the bass. Written as a slash chord: Bdim7/D, Bdim7/F, Bdim7/A♭.
Can you find B Diminished 7th?
Tap the notes on the keyboard, then check. Six chords, starting with this one.
1 / 6 Tap the notes of B Diminished 7th (Bdim7)
Score 0
Any octave, any order. Each key you tap plays.
What key is B Diminished 7th in?
The keys whose scale contains every note of Bdim7, with the chord’s Roman numeral in each.
Minor keys
- C minorvii°7 (harmonic minor)
B Diminished 7th chord FAQ
What notes are in the B Diminished 7th chord?
B Diminished 7th (Bdim7) has 4 notes: B, D, F and A♭. Its formula is 1 – ♭3 – ♭5 – ♭♭7, counted up from B.
How do you play B 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 Diminished 7th?
1st inversion: D, F, A♭, B (Bdim7/D). 2nd inversion: F, A♭, B, D (Bdim7/F). 3rd inversion: A♭, B, D, F (Bdim7/A♭).