With non-negotiable, Reagan-era thrash metal and choruses that make sound systems hemorrhage, Metallica goes longer, faster and harder on Death Magnetic than on previous efforts (St. Anger, ReLoad). And to many longtime fans, nothing else matters. Encouraged by producer Rick Rubin to jam aggressively, Metallica lets the guitars rip between bouts with trademark topics of fear, death, anger and desperation. In addition to Death Magnetic tracks and hits, watch out for obscure covers (Saxon's Motorcycle Man) and rarities (1984's Trapped Under Ice). They perform with Lamb of God at 7 p.m. Saturday at the St. Pete Times Forum, 401 Channelside Drive, Tampa. $49.50-$69.50. (813) 301-2500.