Notechord

A♯maj7♯5 (augmented major 7th) / B♭maj7♯5 (augmented major 7th)

4-note augmented major 7th on A♯ / B♭ — A♯, D, F♯, A.

Press to hear the chord strummed low to high.

A major seventh on an augmented triad — raised fifth under the leading tone, ethereal and unresolved-yet-major.

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
♯5F♯sharp fifth (augmented)
7Amajor seventh

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

From the same deskKeychord— keyboard shortcuts for every app

Guitar fingerings · 4

1243
open position
3fr2114
from fret 3
6fr1234
from fret 6
10fr143211
from fret 10

Ukulele fingerings · 4

312
open position
2341
open position
3fr1423
from fret 3
6fr2314
from fret 6

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

maj7♯5 (augmented major 7th) chords on every root