By now, most have either seen or heard about the unsettling video singer Sinéad O’Connor posted last. As a teen, I worshiped at the altar of grunge. My Pittsburgh bedroom with its music, posters, a. "I just wanted to have more fun with it," the singer says of making music. "Coming from the East Coast, everyone has that traditional guitar-based, drums (sound) and I was listening to pop radio." Mae….