As the IV degree (subdominant), a major chord can resolve to V or directly to I (plagal cadence).
Features
Character
No 3rd, with a 4th and major 6th
Characteristic interval
4th instead of 3rd (4), Major 6th (6)
Description
The 4th replaces the 3rd, leaving chord quality undefined; the major 6th adds a consonant extension. A possible 4–3 motion turns the chord into a 6 chord.
Application
Suspension before a 6 chord
Modal sonorities
Pedal bass
Voicing & structure
Root position
v1B(B4)Bass
root
v2E(E5)P4from B
v3F#(F#5)M2from E
v4G#(G#5)M2from F#
Harmony
Compatible scales
All chord tones are contained in these scales — use them for improvisation.