Sus chords, short for "suspended," are chords where the third interval is replaced by either a second or a fourth. This creates a unique, unresolved sound, neither major nor minor. Commonly, you'll see "sus4" and "sus2" which represent the fourth and second replacing the third. Sus4: The third note of the major chord is replaced with the fourth note. For example, a C major chord (C-E-G) becomes a Csus4 chord (C-F-G). Sus2: The third note of the major chord is replaced with the second note. For e