Adim7/C# Guitar Chord

The A diminished seventh over C# is a dominant chord. Explore fingerings, progressions, and theory analysis below.

Finger Positions

Dominant
Adim7/C# diagram
Root Note A
Name A diminished seventh over C#
Intervals 1P-3m-5d-7d
Relative Minor F#m
Notes C#, A, C, Eb, Gb
Aliases Adim7, A°7, Ao7

Common Progressions Popular patterns using A

I-V-vi-IV

A → E → F#m → D

vi-IV-I-V

F#m → D → A → E

Diatonic Family (Triads)

A Bm C#m D E F#m G#dim

Diatonic Family (7ths)

Amaj7 Bm7 C#m7 Dmaj7 E7 F#m7 G#m7b5

Scale Compatibility

View All Scales
Diminished Ultralocrian Locrian 6 Dorian #4 Lydian Diminished Hungarian Major Lydian #9 Half-Whole Diminished Composite Blues Messiaen's Mode #7 Chromatic

* 11 scales found containing the notes C#, A, C, Eb, Gb.

Audio & MIDI Analysis

MIDI Numbers 61, 69, 60, 63, 66
Frequencies (Hz)

277.1826309768721, 440, 261.6255653005986, 311.1269837220809, 369.9944227116344