A diminished triad for guitar (Adim)
Notes, positions, and inversions of the A diminished triad (Adim) on the guitar fretboard: A · C · D#.
Instrument
Root
Chord
Position (CAGED)
Strings
Toggle individual strings
Frets15
1224
Chord
Adim
ACD#
E
B
G
D
A
E
Scroll horizontally to see the whole fretboard
Legend
A
Root
· R
C
Third
· ♭3
D#
Fifth
· ♭5
Inversions
(strings 1·2·3)Root position
fret 12
1st inversion
fret 5
2nd inversion
fret 9
A diminished
The A diminished triad is made up of three notes: A · C · D#.
It sounds unstable and dissonant, and rarely ends a musical phrase -- instead it's used as a passing chord (typically on the vii degree) to build tension before a resolution.