Finger Positions

Root Note G#

Name G# diminished seventh over C#

Intervals 1P-3m-5d-7d

Relative Minor Fm

Notes C#, G#, B, D, F

Aliases G#dim7, G#°7, G#o7

How to play the G#dim7/C# Chord

The G#dim7/C# is a fundamental dominant chord in guitar music. To play this chord correctly, ensure your fingers are placed precisely on the frets indicated in the diagram above.

Music Theory Analysis

From a theoretical perspective, the G# diminished seventh over C# is built using the 1P, 3m, 5d, 7d intervals. In the key of G# Major, this chord functions as the I chord.

Common Progressions

In music composition, the G#dim7/C# chord is often used to create tension or resolution.

I-V-vi-IV

G# → D# → Fm → C#

vi-IV-I-V

Fm → C# → G# → D#

The Diatonic Family

Understanding the "family" of chords that belong to G# helps with transposition and ear training.

Triads

G# A#m Cm C# D# Fm Gdim

7ths

G#maj7 A#m7 Cm7 C#maj7 D#7 Fm7 Gm7b5

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#, G#, B, D, F.

Acoustic & Digital Analysis

Digital footprint of the G#dim7/C# chord for MIDI programming and synthesizer sound design.

MIDI Numbers 61, 68, 71, 62, 65

Frequencies (Hz)

277.1826309768721, 415.3046975799451, 493.8833012561241, 293.6647679174076, 349.2282314330039