Finger Positions

Root Note A

Name A minor augmented

Intervals 1P-3m-5A

Relative Minor F#m

Notes A, C, F

Aliases Am#5, A-#5, Am+

How to play the Am#5 Chord

The Am#5 is a fundamental augmented 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 minor augmented is built using the 1P, 3m, 5A intervals. In the key of A Major, this chord functions as the I chord.

Common Progressions

In music composition, the Am#5 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

Minor Harmonic Minor Diminished Phrygian Locrian Vietnamese 1 Pelog Hirajoshi Malkos Raga Augmented Altered Locrian #2 Ultralocrian Augmented Heptatonic Balinese

* 15 scales found containing the notes A, C, F.

Acoustic & Digital Analysis

Digital footprint of the Am#5 chord for MIDI programming and synthesizer sound design.

MIDI Numbers 69, 60, 65

Frequencies (Hz)

440, 261.6255653005986, 349.2282314330039