Finger Positions

Root Note C

Name C minor augmented over F#

Intervals 1P-3m-5A

Relative Minor Am

Notes F#, C, Eb, G#

Aliases Cm#5, C-#5, Cm+

How to play the Cm#5/F# Chord

The Cm#5/F# is a fundamental augmented 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 minor augmented over F# is built using the 1P, 3m, 5A intervals. In the key of C Major, this chord functions as the I chord.

Common Progressions

In music composition, the Cm#5/F# chord is often used to create tension or resolution.

I-V-vi-IV

C → G → Am → F

vi-IV-I-V

Am → F → C → G

The Diatonic Family

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

Triads

C Dm Em F G Am Bdim

7ths

Cmaj7 Dm7 Em7 Fmaj7 G7 Am7 Bm7b5

Scale Compatibility

View All Scales

Minor Harmonic Minor Diminished Phrygian Locrian Vietnamese 1 Pelog Hirajoshi Malkos Raga Augmented Altered Locrian #2 Ultralocrian Augmented Heptatonic Balinese

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

Acoustic & Digital Analysis

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

MIDI Numbers 66, 60, 63, 68

Frequencies (Hz)

369.9944227116344, 261.6255653005986, 311.1269837220809, 415.3046975799451