Finger Positions

Root Note A

Name A major over D

Intervals 1P-3M-5P

Relative Minor F#m

Notes D, A, C#, E

Aliases AM, A^, A, Amaj

How to play the A/D Chord

The A/D is a fundamental major 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 A major over D is built using the 1P, 3M, 5P intervals. In the key of A Major, this chord functions as the I chord.

Common Progressions

In music composition, the A/D chord is often used to create tension or resolution.

I-V-vi-IV

A → E → F#m → D

vi-IV-I-V

F#m → D → A → E

The Diatonic Family

Understanding the "family" of chords that belong to A helps with transposition and ear training.

Triads

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

7ths

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

Scale Compatibility

View All Scales

Major Pentatonic Major Major Blues Bebop Lydian Mixolydian Ionian Pentatonic Mixolydian Pentatonic Lydian Pentatonic Flat Six Pentatonic Scriabin Lydian Dominant Pentatonic Augmented Double Harmonic Lydian Mixolydian B6

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

Acoustic & Digital Analysis

Digital footprint of the A/D chord for MIDI programming and synthesizer sound design.

MIDI Numbers 62, 69, 61, 64

Frequencies (Hz)

293.6647679174076, 440, 277.1826309768721, 329.6275569128699