Dadd11 chord
D added eleventh
1 / 1
3
5
7
10
The Dadd11 chord has the formula 1, 3, 5, 11 with notes D, F#, A, G
The added eleventh chord can be built by taking a major chord and adding the 11th of the scale. It is somewhat dissonant because the 3rd and 11th are one semitone apart.