Cmaj9/A# Guitar Chord

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

Finger Positions

Major
Cmaj9/A# diagram
Root Note C
Name C major ninth over A#
Intervals 1P-3M-5P-7M-9M
Relative Minor Am
Notes A#, C, E, G, B, D
Aliases Cmaj9, CΔ9, C^9

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 Bebop Lydian Harmonic Major Bebop Major Ichikosucho Messiaen's Mode #3 Chromatic

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

Audio & MIDI Analysis

MIDI Numbers 70, 60, 64, 67, 71, 62
Frequencies (Hz)

466.1637615180899, 261.6255653005986, 329.6275569128699, 391.99543598174927, 493.8833012561241, 293.6647679174076