B7(#9) chord
The B dominant seventh sharp ninth chord (abbreviated "B7(#9) chord") is a five-note chord consisting of the notes B, D♯, F♯, A, and C♯. The chord is formed by adding an augmented ninth to a B dominant seventh chord.
In practice, the fifth (F♯) is often omitted from the B7(#9) chord because it's not always possible to play all notes simultaneously.
Name
B dominant seventh sharp ninth chord
Synonym
B dominant sharp ninth chord
Notes
B D♯ F♯ A C♯
Intervals
1 3 5 ♭7 ♯9
Chord symbol
B7(#9)
Alternative symbol
B7#9
Type
Pentad (five-note chord)