As the IV degree (subdominant), a major chord can resolve to V or directly to I (plagal cadence).
Features
Character
Major, with a major 7th and #11
Characteristic interval
Major 7th (M7), Augmented 11th (#11)
Description
The major 7th preserves maj7 structure, while #11 forms a tritone with the root and avoids the close semitone clash that a perfect 11th creates with the 3rd.
Application
Lydian tonic
Modern jazz
Major pedal-point textures
Voicing & structure
Root position
v1Db(Db4)Bass
root
v2F(F4)M3from Db
v3Ab(Ab4)m3from F
v4C(C5)M3from Ab
v5G(G5)P5from C
Harmony
Compatible scales
All chord tones are contained in these scales — use them for improvisation.