Finger Positions

Root Note C#

Name C# minor over A

Intervals 1P-3m-5P

Relative Minor E

Notes A, C#, E, G#

Aliases C#m, C#min, C#-

How to play the C#m/A Chord

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

Common Progressions

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

I-V-vi-IV

C#m → G#m → A → F#m

vi-IV-I-V

A → F#m → C#m → G#m

The Diatonic Family

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

Triads

C#m D#dim E F#m G#m A B

7ths

C#m7 D#m7b5 Emaj7 F#m7 G#m7 Amaj7 B7

Scale Compatibility

View All Scales

Minor Major Blues Minor Blues Melodic Minor Harmonic Minor Dorian Phrygian Vietnamese 1 Pelog Hirajoshi Minor Pentatonic Minor Six Pentatonic Flat Three Pentatonic Minor #7m Pentatonic Minor Hexatonic

* 15 scales found containing the notes A, C#, E, G#.

Acoustic & Digital Analysis

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

MIDI Numbers 69, 61, 64, 68

Frequencies (Hz)

440, 277.1826309768721, 329.6275569128699, 415.3046975799451