Nu-metal forefathers Korn get credit for turning me on to heavy music. I thrashed my way through high school to their first two albums ("You can Suck my dick and fucking like it!") is still one of my all-time favorite lyrics), avoided mosh pits at several spirited shows, and generally fed my angst-ridden rage until I got older and became less jaded by life. Korn has managed to maintain its popularity over the years by catering to each new generation of tormented teens, its heavy, sinister, now mainstream-friendly music marked by lead singer Jonathan Davis' trademark chanting and screaming vocal style. Korn headlines the Family Values Tour, a traveling festival of nu-metal and heavy alt rock that stops in Tampa today; Evanescence, Atreyu, Flyleaf, Droid, Five Finger Death Punch and several others provide support. Wed., Aug. 15, 2:30 p.m., Ford Amphitheatre, 4802 U.S. 301 N., Tampa, $9.99-$59.50, fordamp.com.