On the group's earliest albums, vocalist Mike Muir specialized in intense, angst-ridden rants, harrowing but one-dimensional. He has since developed into a rock-solid vocalist, his voice a powerful and fluid instrument. Muir still delivers emotionally ferocious spoken-word segments on "Nobody Hears" and "I Wasn't Meant to Hear This," but the trademark is woven into good songs rather than being an end onto itself. A clenched fist in a velvet glove -- or is it an open hand in chain mail? -- whichever, The Art of Rebellion packs a punch that should win over new devotees while maintaining the group's hardcore following.