A#7 Dominant-Septakkord Akkord

The A# Dominant-Septakkord chord contains: A#, D, F, G#.

These notes are derived by applying the dominant 7th interval formula (0–4–7–10 semitones) to the root note A#.

A major triad with a minor seventh.

Creates harmonic tension that resolves to the tonic. The A#7 chord is used across pop, rock, jazz, and classical music. As the I chord in the key of A# major, it functions as the most stable resting point in progressions.

On piano, play A#, D, F, G# simultaneously.

In root position, A# is the lowest note. Inversions move the bass note up — first inversion has D lowest, second inversion has F lowest.

A dominant 7th chord has 4 notes: A#, D, F, G# (in A#).

It is a 7th chord, extending beyond the basic triad.

The A# major chord (A#–D–F) uses a major third (4 semitones), giving it a bright, happy sound.

The A# minor chord (A#–C#–F) uses a minor third (3 semitones), giving it a darker, emotional sound.

A#7 naturally serves as the I chord in the key of A# major.

It also appears as IV in the key of F major, and as V in the key of D# major.

Yes.

The ukulele uses GCEA tuning with 4 strings. The A#7 chord notes (A#, D, F, G#) can be fretted on a ukulele, though the shapes differ from guitar due to the 4-string layout and shorter scale.

In the key of A# major, A#7 pairs naturally with D# major (IV), F major (V), and Gm (vi).

The classic I–IV–V (A#7–D#–F) is the foundation of blues, country, and rock.

An inversion places a non-root note in the bass.

A#7 root position: A# in bass. First inversion: D in bass. Second inversion: F in bass. Inversions create smoother bass line movement without changing the harmony.

Remember the formula: 0–4–7–10 semitones from root.

For A#7: start on A#, add 4 semitones, then 7 semitones, then 10 semitones. Practicing this across all 12 roots builds instant recognition of any dominant 7th chord.