Cadd9/A Guitar Chord

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

Finger Positions

Dominant
Cadd9/A diagram
Root Note C
Name C over A
Intervals 1P-3M-5P-9M
Relative Minor Am
Notes A, C, E, G, D
Aliases CMadd9, C2, Cadd9, Cadd2

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
Major Pentatonic Major Major Blues Bebop Lydian Mixolydian Flat Six Pentatonic Mixolydian B6 Lydian Dominant Lydian Minor Harmonic Major Bebop Minor Bebop Major Ichikosucho Composite Blues

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

Audio & MIDI Analysis

MIDI Numbers 69, 60, 64, 67, 62
Frequencies (Hz)

440, 261.6255653005986, 329.6275569128699, 391.99543598174927, 293.6647679174076