D 3
The D 3 chord consists of the D (Perfect unison) and F# (Major third) notes.

How to play the D 3 chord
- Find D (Root) on the piano keyboard
- Add F# (Major third) — 4 semitones above D
- Press all 2 notes simultaneously to sound the D 3 chord
The D 3 chord consists of the D (Perfect unison) and F# (Major third) notes.
