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Dm7b5 chord (D half-diminished seventh) on piano

Dm7b5 (D half-diminished seventh) has four notes: D, F, A flat and C. Its formula is 1, b3, b5, b7. In major keys, Dm7b5 is the viiø7 chord in Eb major.

Dm7b5 inversions and fingering

DFCAb
Root position
D F Ab C · RH 1-2-3-5 · LH 5-3-2-1
FCDAb
First inversion
F Ab C D · RH 1-2-4-5 · LH 5-3-2-1
CDFAb
Second inversion
Ab C D F · RH 1-2-3-5 · LH 5-3-2-1
CDFAb
Third inversion
C D F Ab · RH 1-2-3-5 · LH 5-4-2-1
DFC
Shell (left hand)
D F C · LH 5-3-1

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Dm7b5 chord facts
SymbolDm7b5
Also writtenDø, Dø7, Dmin7b5, D-7b5
NotesD F Ab C
Formula1 b3 b5 b7
Intervalsroot, minor third, tritone, minor seventh
TypeHalf-diminished seventh chord

Dm7b5 across the keyboard

C3C4C5Cb7D1Fb3Cb7D1Fb3Cb7Abb5Abb5

Piano, C3 to C5. Notes in this scale, low to high: C3 (flat 7), D3 (1), F3 (flat 3), Ab3 (flat 5), C4 (flat 7), D4 (1), F4 (flat 3), Ab4 (flat 5), C5 (flat 7).

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Questions

What notes are in the Dm7b5 chord?

Dm7b5 (D half-diminished seventh) has four notes: D, F, A flat and C. Its formula is 1, b3, b5, b7. D is the root, F is the minor third, Ab is the tritone and C is the minor seventh.

How do you play Dm7b5 on piano?

Play D, F, Ab and C together. Root position: D F Ab C · RH 1-2-3-5 · LH 5-3-2-1.

What key is Dm7b5 in?

In major keys, Dm7b5 is the viiø7 chord in Eb major. It is diatonic to those keys, so it fits songs in any of them.

What is the difference between Dm7b5 and Ddim7?

Dm7b5 and Ddim7 share D, F and Ab. Dm7b5 has C, the flat 7th, where Ddim7 has Cb, the double flat 7th.