semicord

D#dim D# diminished chord

Notes
D# F# A
Formula
1 b3 b5
Semitones
0 3 6 above the root
Also written
Ebdim (Eb Gb Bbb)
Other symbols
D#°, D#m(b5)

D# to F# is a minor third (3 semitones), F# to A is a minor third (3 semitones). Two minor thirds stacked, so D# to A is a tritone (6 semitones) instead of a perfect fifth. The four-note D#dim7 and D#m7b5 grow from it by adding a note on top.

D#dim on the piano

C4D4E4F4G4A4B4C5D5E5F5G5A5B5C#4D#4F#4Ab4Bb4C#5Eb5F#5Ab5Bb5C4D#F#AC5

Root position from D#4: D#4, F#4, A4. Middle C is C4.

D#dim on the guitar

Standard tuning (E A D G B E). Strings run low E on the left to high e on the right, frets downwards; × is a muted string, ○ an open string, and each dot shows the note it sounds, with the root in blue-green. Every shape below has D# as its lowest note.

6fr×D#D#AAD#D#F#F#×
A-shape, root on the A string at fret 6
x 6 7 8 7 x (low E to high e)
Sounds D#3 A3 D#4 F#4
11frD#D#AAD#D#F#F#××
E-shape barre, root on the E string at fret 11
11 12 13 11 x x (low E to high e)
Sounds D#3 A3 D#4 F#4

The E-shape and A-shape grips are movable: an E-shape chord's root is the note under your first finger on the low E string, an A-shape chord's root is the note on the A string. Slide the same grip up or down to play diminished chords on other roots.

D#dim on the ukulele

Standard ukulele tuning is G C E A, drawn with the G string on the left and frets downwards, as ukulele chord charts show it. The G string is tuned higher than the C string (G4 above middle C, a fifth over C4), so the lowest note you hear is usually on the C or E string, not on the G string, and a shape can sound as an inversion even when its root is on the G string. All four strings are strummed, so every string plays a chord tone; the root is in blue-green.

AAD#D#F#F#A
Open position
2320 (G C E A)
Sounds A4 D#4 F#4 A4
5frD#D#F#F#AAA
At fret 5 with the open A string
8650 (G C E A)
Sounds D#5 F#4 A4 A4
Lowest note F#4, so the chord finder reads it as D#dim/F# (first inversion).

Inversions of D#dim

An inversion puts a note other than the root in the bass. The name is what semicord's chord finder calls those notes played bottom to top; a slash name like C/E means a C chord with E in the bass.

PositionNotes, bass firstNamedListen
Root positionD# F# AD#dim
1st inversionF# A D#D#dim/F#
2nd inversionA D# F#D#dim/A

Where D#dim fits

D#dim is vii° in E major, ii° in C# minor, vii° in E minor. Its root D# is the leading tone of E: a half step below the tonic, so the chord usually moves up to it.

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