A♯alt (altered dominant) / B♭alt (altered dominant)

5-note altered dominant on A♯ / B♭A♯, D, E, F, G♯.

Press to hear the chord strummed low to high.

The altered dominant — chords-db voices it as a 7♯11 shape (third, raised eleventh and flat seventh). Maximum tension before the release.

The notes

Pitches taken from the first fingering below — click any note to open its frequency page.

Interval formula

DegreeNoteWhat it is
1A♯root
3Dmajor third
♯11Esharp eleventh (tritone)
5Fperfect fifth
♭7G♯flat seventh (dominant)

The formula reads in semitones above the root (A♯): 1, 3, ♯11, 5, ♭7. A voicing may leave a tone out — often the fifth — but never adds one from outside this set.

Guitar fingerings · 4

1234
open position
5fr2341
from fret 5
6fr1342
from fret 6
8fr1243
from fret 8

Ukulele fingerings · 4

321
open position
3fr1243
from fret 3
4fr4132
from fret 4
7fr1341
from fret 7

Read a diagram top-down: the thick bar is the nut, dots are where to press (the number is which finger), means play the open string, means don't play it. A bar across strings is a barre.

Other A♯ / B♭ chords

alt (altered dominant) chords on every root