D7(b9) chord
The D dominant minor ninth chord (abbreviated "D7(b9) chord") is a five-note chord consisting of the notes D, F♯, A, C, and E♭. The chord is formed by adding a major ninth to a D dominant seventh chord.
In practice, the fifth (A) is often omitted from the D7(b9) chord because it's not always possible to play all notes simultaneously.
Name
D dominant minor ninth chord
Notes
D F♯ A C E♭
Intervals
1 3 5 ♭7 ♭9
Chord symbol
D7(b9)
Alternative symbol
D7b9
Type
Pentad (five-note chord)