CHORD REFERENCE

B♭ Diminished

B♭ – D♭ – F♭1 b3 b5

Also written A♯dim — the same pitches spelled the other way.

The B♭ Diminished chord and everything around it — the notes and how they are built, the shape on piano and guitar, the sound, and the keys it belongs to.

Notes
B♭1D♭b3F♭b5

B♭dim is Bb, Db, Fb — the 1, b3 and b5 above the root B♭.

Piano
F♭B♭D♭
Guitar

Guitar — every position (frets 0–12)

357912eF♭B♭D♭F♭BD♭F♭B♭GB♭D♭F♭DF♭B♭D♭AB♭D♭F♭EF♭B♭D♭F♭

Root notes are red. There is no standard open shape for this chord — any group of these notes on the neck sounds the chord.

Ukulele (standard G–C–E–A)

357912AB♭D♭F♭EF♭B♭D♭F♭CD♭F♭B♭GB♭D♭F♭

Every position of the chord tones on the ukulele neck — any group that sounds only Bb, Db, Fb plays the chord.

In which keys

B♭dim is a diatonic chord in these keys:

vii°B majorii°A♭ minor
Other B♭ chords

Triads

B♭MajorB♭mMinorB♭5Power Chord (5)B♭augAugmentedB♭sus2Suspended 2ndB♭sus4Suspended 4th

Sixths & sevenths

B♭6Major 6thB♭m6Minor 6thB♭7Dominant 7thB♭maj7Major 7thB♭m7Minor 7thB♭m(maj7)Minor–Major 7thB♭dim7Diminished 7thB♭m7♭5Half-Diminished (m7♭5)B♭7sus47sus4

Altered dominants

B♭7♭57♭5B♭7♯57♯5 (Augmented 7th)B♭7♭97♭9B♭7♯97♯9 (Hendrix Chord)

Extended & added

B♭add9Added 9thB♭6/96/9B♭9Dominant 9thB♭maj9Major 9thB♭m9Minor 9thB♭11Dominant 11thB♭13Dominant 13th
Diminished on another root
CC♯DD♯EFF♯GG♯AB♭A♯B
Keep exploring

Work out the chords of a whole key with the Scale & Chord Finder, name a chord from its notes with the Chord Identifier, or browse every chord tool. The theory behind how chords are built is in the free Cloud Atelier music guides.