Finger Positions

Root Note C#

Name C# suspended fourth sharp fifth over F

Intervals 1P-4P-5A

Relative Minor A#m

Notes F, C#, F#, A

Aliases

How to play the C#sus4#5/F Chord

The C#sus4#5/F is a fundamental suspended 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 sharp fifth over F is built using the 1P, 4P, 5A intervals. In the key of C# Major, this chord functions as the I chord.

Common Progressions

In music composition, the C#sus4#5/F 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

* 0 scales found containing the notes F, C#, F#, A.

Acoustic & Digital Analysis

Digital footprint of the C#sus4#5/F chord for MIDI programming and synthesizer sound design.

MIDI Numbers 65, 61, 66, 69

Frequencies (Hz)

349.2282314330039, 277.1826309768721, 369.9944227116344, 440