There was a time when parents hated this music. Not all of them, of course, but enough that "turn that noise down" became part of growing up in the '90s. The distorted guitars. The gravelly vocals. The flannel. The angst. Grunge wasn't supposed to become timeless. It was supposed to be a phase. Thursday night, hundreds of people gathered in Downtown Aiken to sing every word. Somewhere along the way, the soundtrack of teenage rebellion quietly became classic rock.