Okay, actually, it was “Pure Hatred,” not “Nothing Remains,” but give me some poetic license here. Chimaira have been pretty liberal with allowing their friends to come up and sing “Pure Hatred.” Lamb of God’s Randy Blythe has gotten up and sang with them before, and now they’re bringing up bands that aren’t even on the tour. At the Mansfield, MA stop of the tour, All That Remains’ Phil Labonte got up and sang. Basically, it’s fun to sing “I Hate Everyone,” even if it’s kind of ironic, in an “I hate everyone, but here’s a friend of mine from another band that I like” kind of way. But between Chimaira inviting people to sing, and Blythe singing with Hatebreed, it’s been a pretty collaborative Mayhem Fest.