A#add9 chord
The A-sharp added ninth chord (abbreviated "A#add9 chord") is a four-note chord consisting of the notes A♯, C, E♯, and B♯. The chord is formed by adding a major ninth to a A-sharp major chord.
Often, a major second is played instead of the major ninth since they are the same note.
Name
A-sharp added ninth chord
Synonym
A-sharp added second chord
Notes
A♯ C E♯ B♯
Intervals
1 3 5 9
Chord symbol
A♯add9
Alternative symbols
A♯(add9) A♯add2 A♯(add2)
Type
tetrad (four-note chord)