Finger Positions

C#7sus4/G# diagram
Root Note C#
Name C# suspended fourth seventh over G#
Intervals 1P-4P-5P-7m
Relative Minor A#m
Notes C#, F#, G#, B
Aliases C#7sus4, C#7sus

How to play the C#7sus4/G# Chord

The C#7sus4/G# 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 C# suspended fourth seventh over G# is built using the 1P, 4P, 5P, 7m intervals. In the key of C# Major, this chord functions as the I chord.

Common Progressions

In music composition, the C#7sus4/G# chord is often used to create tension or resolution.

I-V-vi-IV

C# → G# → A#m → F#

vi-IV-I-V

A#m → F# → C# → G#

The Diatonic Family

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

Triads

C# D#m Fm F# G# A#m Cdim

7ths

C#maj7 D#m7 Fm7 F#maj7 G#7 A#m7 Cm7b5

Scale Compatibility

View All Scales
Minor Minor Blues Bebop Dorian Mixolydian Phrygian Mixolydian Pentatonic Egyptian In-Sen Minor Pentatonic Piongio Mixolydian B6 Dorian B2 Phrygian Dominant Spanish Heptatonic

* 15 scales found containing the notes C#, F#, G#, B.

Acoustic & Digital Analysis

Digital footprint of the C#7sus4/G# chord for MIDI programming and synthesizer sound design.

MIDI Numbers 61, 66, 68, 71
Frequencies (Hz)

277.1826309768721, 369.9944227116344, 415.3046975799451, 493.8833012561241