The A-sharp dominant seventh chord (abbreviated "A#7 chord") is a four-note chord consisting of the notes A, C, E, and G. The chord is formed by adding a minor seventh to a A-sharp major chord.

Name
A-sharp dominant seventh chord
Synonym
A-sharp major-minor seventh chord
Notes
A C E G
Intervals
1 3 5 7
Chord symbol
A7
Type
tetrad (four-note chord)

A#7 chord on piano

A#7 chord on guitar

A#7 chord on ukulele

A#7 chord on the staff