User blog comment:NinjaClockworker/Evillious Chronicles 101: YouTube Series?/@comment-4875891-20121018031356/@comment-155.69.2.11-20121018060634

Alternatively, you can choose to do Story of Evil first, but only take details from the songs. After you you introduce the Vessels of Sin, then you can go back to Story of Evil and flesh it out with other stuff from the novels.

To be honest, I think it's better to follow the Chronicles based on release order.