A6b5/C Guitar Chord

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

Finger Positions

Major
A6b5/C diagram
Root Note A
Name A over C
Intervals 1P-3M-5P-6M-11A
Relative Minor F#m
Notes C, A, C#, E, F#, D#
Aliases AM6#11, AM6b5, A6#11, A6b5

Common Progressions Popular patterns using A

I-V-vi-IV

A → E → F#m → D

vi-IV-I-V

F#m → D → A → E

Diatonic Family (Triads)

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

Diatonic Family (7ths)

Amaj7 Bm7 C#m7 Dmaj7 E7 F#m7 G#m7b5

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, A, C#, E, F#, D#.

Audio & MIDI Analysis

MIDI Numbers 60, 69, 61, 64, 66, 63
Frequencies (Hz)

261.6255653005986, 440, 277.1826309768721, 329.6275569128699, 369.9944227116344, 311.1269837220809