C6b5/C# Guitar Chord

The C over C# is a major chord. Explore fingerings, progressions, and theory analysis below.

Finger Positions

Major
C6b5/C# diagram
Root Note C
Name C over C#
Intervals 1P-3M-5P-6M-11A
Relative Minor Am
Notes C#, C, E, G, A, F#
Aliases CM6#11, CM6b5, C6#11, C6b5

Common Progressions Popular patterns using C

I-V-vi-IV

C → G → Am → F

vi-IV-I-V

Am → F → C → G

Diatonic Family (Triads)

C Dm Em F G Am Bdim

Diatonic Family (7ths)

Cmaj7 Dm7 Em7 Fmaj7 G7 Am7 Bm7b5

Scale Compatibility

View All Scales
Lydian Lydian Dominant Hungarian Major Lydian #9 Ichikosucho Half-Whole Diminished Composite Blues Chromatic

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

Audio & MIDI Analysis

MIDI Numbers 61, 60, 64, 67, 69, 66
Frequencies (Hz)

277.1826309768721, 261.6255653005986, 329.6275569128699, 391.99543598174927, 440, 369.9944227116344