M. Shadows and Synyster Gates?!

Question:

M. Shadows and Synyster Gates?

---

I heard a song called The River by Good Charlotte. The song also features M. Shadows and Synyster Gates. However, I cannot find any songs or albums by either of these artists. Can you tell me who they are and where I can find their music?

Answers: They are from Avenged Sevenfold ...their from Avenged Sevenfold.... wow...they're from AVENGED SEVENFOLD they're from avenged sevenfold

---