BookatlasPiano Rabbit Hole: Improvisation Theory & Practice
9784 / 18210 · Workshop 80 — Harmonic Ambiguity and Delayed Identity: Sus Chords, No-3rd Voicings, Slash Chords, Pedals, and Letting the Listener Discover the Harmony← prev⊞ allnext →

80.104Ambiguity requires control

If you omit the 3rd because you forgot it:

not sophisticated.

If you omit the 3rd because you want:

major/minor identity delayed until the melody enters—

that is arrangement.

Intent is the difference.