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 9th
Characteristic interval
Major 7th (M7), 9th
Description
The major 7th creates semitone tension toward the octave, while the major 9th extends the major seventh chord. Separating extensions by register clarifies the structure.
Application
Tonic Imaj9
Neo-soul and jazz
Sustained chordal textures
Voicing & structure
Root position
v1G#(G#4)Bass
root
v2B#(B#5)M3from G#
v3D#(D#5)m3from B#
v4G(G5)M3from D#
v5A#(A#5)m3from G
Harmony
Compatible scales
All chord tones are contained in these scales — use them for improvisation.