Question: Rotting in Vain was featured on a Korn album that, according to Brian Welch, is heavier than anyone's heard them in a long time, and was released when?
Sentence (from "The Serenity of Suffering"): According to guitarist Brian Welch, it is "heavier than anyone's heard us in a long time" and that it contains their most intense music in a long time vocally as well.
Relevant evidence: Yes