D thirteenth chord
D13 chord for piano presented by keyboard diagrams.
Explanation: The D thirteenth is a seven note chord. Due to practical circumstances, some notes (as a suggestion fifth, ninth, and eleventh) is omitted and the chord is played inverted. The chord is often abbreviated as D13.
Theory: The D thirteenth chord is constructed by adding a third to an eleventh chord.
Notes: D - F# - A - C - E - G - B