Expounding upon the snarling metal fantasies of 2002's "The Hell Song," Chuck sounds battle-scarred. Jagged-lightning riffage and fret-shredding tempos dredge up the war-weary intensity of Black Sabbath or late-'80s Metallica ("The Bitter End"), while more punkish tunes (especially the no-brakes, Damnedesque "No Reason") sound like a war zone. Vocalist Deryck Whibley's nasally attempts at metal-dude gruffness backfire every so often -- causing a few tunes to skulk like shady Linkin Park castoffs -- but Chuck is both a loving homage to Sum 41's headbanging heroes and an impressive progression.