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A diminished seventh arpeggio for guitar (Adim7)

Notes, positions, and fretboard fingerings for the A diminished seventh arpeggio (Adim7): A · C · D# · F#.

Instrument
Root
Chord
Triads
Sevenths
Position (CAGED)
Frets15
1224
Chord
Adim7
ACD#F#
E
B
G
D
A
E
F#ACD#F#CD#F#ACACD#F#AD#F#ACD#ACD#F#ACF#ACD#F#35791512
Scroll horizontally to see the whole fretboard

Legend

A
Root
· R
C
Third
· ♭3
D#
Fifth
· ♭5
F#
Seventh
· ♭♭7

Arpeggio sheet

Adim7
Formula (degrees)
R ♭3 ♭5 ♭♭7
Notes in key
A C D# F#
Typical use
Diminished passing sound and resolving dominants.
See the Adim triad →

A diminished seventh

The A diminished seventh arpeggio is made up of: A · C · D# · F#.

The diminished seventh arpeggio: four stacked minor thirds, a symmetric passing sound used over diminished chords and resolving dominants.