Bdim7 chord on piano
B diminished 7th: B · D · F · A♭. It sounds maximum suspense — stacked minor 3rds that could resolve four different ways.
NotesB D F A♭
Built fromroot + minor 3rd + diminished 5th + diminished 7th
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On the keyboard
Fingering
Right hand, root position: B — finger 1 · D — finger 2 · F — finger 3 · A♭ — finger 5. (1 = thumb, 5 = little finger.)
Inversions
The same notes in a different order. Inversions are how players move between chords without jumping:
- RootB – D – F – A♭
- 1stD – F – A♭ – B
- 2ndF – A♭ – B – D
- 3rdA♭ – B – D – F