Finger Positions

Diagram unavailable.

Root Note C

Name C augmented 9 over F#

Intervals 1P-3M-5A-9M

Relative Minor Am

Notes F#, C, E, G#, D

Aliases

How to play the Caug9/F# Chord

The Caug9/F# 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 augmented 9 over F# is built using the 1P, 3M, 5A, 9M intervals. In the key of C Major, this chord functions as the I chord.

Common Progressions

In music composition, the Caug9/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

* 0 scales found containing the notes F#, C, E, G#, D.

Acoustic & Digital Analysis

Digital footprint of the Caug9/F# chord for MIDI programming and synthesizer sound design.

MIDI Numbers 66, 60, 64, 68, 62

Frequencies (Hz)

369.9944227116344, 261.6255653005986, 329.6275569128699, 415.3046975799451, 293.6647679174076