As the IV degree (subdominant), a major chord can resolve to V or directly to I (plagal cadence).
Features
Character
Major, with an added 11th and no 7th
Characteristic interval
Perfect 11th without 7th (add11)
Description
A perfect 11th is added to a major triad without a 7th. The 3rd and 11th form a semitone dissonance that may be featured as a cluster or separated by register.
Application
Clustered major textures
Pedal sonorities
Modern popular harmony
Voicing & structure
Root position
v1G#(G#4)Bass
root
v2B#(B#5)M3from G#
v3D#(D#5)m3from B#
v4C#(C#6)m7from D#
Harmony
Compatible scales
All chord tones are contained in these scales — use them for improvisation.