Although, technically, there should be a difference between the "2" (which includes the add2 or add9) and the sus2. A sus chord substitutes the 3 with either a 4 or a 2. When you see sus4 (or just sus, which implies sus4), you substitute the 3 with a 4 (or in Matt's example, the E with the F). In a sus2 chord, you substitute the 3 with a 2 (or in the example, the E with a D).

A Cadd9 chord includes the E (C E G D); a Csus2 does not (C F G).

I wish PGMusic supported the different variations here accordingly.

John

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