It’s a serious safety tool. Inside the horn is a diaphragm or metal reed. When air hits it—boom—it wails like a hair band’s lead singer. The sound gets channeled through a flaring metal horn, which ...

Parents were rocking out with their kids, arms up, fists clenched, metal horns raised high. To be in the room was to be part of the spectacle. Cavalera Conspiracy is the band that invites you in ...