Finger Positions

Root Note C

Name C minor seventh over C#

Intervals 1P-3m-5P-7m

Relative Minor Am

Notes C#, C, Eb, G, Bb

Aliases Cm7, Cmin7, Cmi7, C-7

How to play the Cm7/C# Chord

The Cm7/C# 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 minor seventh over C# is built using the 1P, 3m, 5P, 7m intervals. In the key of C Major, this chord functions as the I chord.

Common Progressions

In music composition, the Cm7/C# 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 Minor Blues Dorian Phrygian Minor Pentatonic Dorian B2 Dorian #4 Hungarian Major Flamenco Spanish Heptatonic Bebop Minor Bebop Locrian Minor Bebop Half-Whole Diminished Kafi Raga

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

Acoustic & Digital Analysis

Digital footprint of the Cm7/C# chord for MIDI programming and synthesizer sound design.

MIDI Numbers 61, 60, 63, 67, 70

Frequencies (Hz)

277.1826309768721, 261.6255653005986, 311.1269837220809, 391.99543598174927, 466.1637615180899