D major sharp eleventh (lydian) piano chord - Dmaj9#11
The D major sharp eleventh (lydian) chord is a 6-note chord consisting of the notes D, F#, A, C#, E and G#.
You can see these notes highlighted in the interactive piano chart below.
The chord itself is often abbreviated as Dmaj9#11.
Interactive piano diagram for the D major sharp eleventh (lydian) chord
Chords that are a subset of Dmaj9#11. These contain less notes but all of them are included in Dmaj9#11.